TY  - JOUR
AU  - Blagojević, Slavica
AU  - Erić, Nataša
AU  - Nešović, Milica
AU  - Blagojević, Stevan N.
PY  - 2019
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3555
AB  - The micellization behavior and foamability of a mixture of anionic surfactant sodium laureth sulfate (SLES) and nonionic polysorbate surfactants commercially available as Tween series were investigated. The mole fraction and the structure of the hydrophobic part of various polysorbates affect the critical micellar concentration (CMC) and foam height and stability of anionic surfactant. Experimental values of CMC were determined by measuring specific conductivity at 25°C and foam height and stability by modified Ross–Miles method at 23°C. The negative deviation of the experimentally determined CMC from theoretical values for ideal mixed micelle indicate non-ideal mixing behavior due to synergism as a consequence of attractive interactions between the individual surfactants in formed micelles. Thus synergism increase with increasing of both the mole fraction and length of hydrophobic tail of examined Tween in SLES/Tween mixtures. Foam height and stability significantly decrease with increasing length of the hydrophobic tail of Tween surfactants and their mole fractions in the binary mixture.
PB  - Springer
T2  - Russian Journal of Physical Chemistry A
T1  - Micellization and Foamability of Sodium Laureth Sulfate and Polysorbate Surfactant Mixtures
VL  - 93
IS  - 13
SP  - 2804
EP  - 2811
DO  - 10.1134/S0036024419130053
ER  - 

@article{
author = "Blagojević, Slavica and Erić, Nataša and Nešović, Milica and Blagojević, Stevan N.",
year = "2019",
abstract = "The micellization behavior and foamability of a mixture of anionic surfactant sodium laureth sulfate (SLES) and nonionic polysorbate surfactants commercially available as Tween series were investigated. The mole fraction and the structure of the hydrophobic part of various polysorbates affect the critical micellar concentration (CMC) and foam height and stability of anionic surfactant. Experimental values of CMC were determined by measuring specific conductivity at 25°C and foam height and stability by modified Ross–Miles method at 23°C. The negative deviation of the experimentally determined CMC from theoretical values for ideal mixed micelle indicate non-ideal mixing behavior due to synergism as a consequence of attractive interactions between the individual surfactants in formed micelles. Thus synergism increase with increasing of both the mole fraction and length of hydrophobic tail of examined Tween in SLES/Tween mixtures. Foam height and stability significantly decrease with increasing length of the hydrophobic tail of Tween surfactants and their mole fractions in the binary mixture.",
publisher = "Springer",
journal = "Russian Journal of Physical Chemistry A",
title = "Micellization and Foamability of Sodium Laureth Sulfate and Polysorbate Surfactant Mixtures",
volume = "93",
number = "13",
pages = "2804-2811",
doi = "10.1134/S0036024419130053"
}

Blagojević, S., Erić, N., Nešović, M.,& Blagojević, S. N.. (2019). Micellization and Foamability of Sodium Laureth Sulfate and Polysorbate Surfactant Mixtures. in Russian Journal of Physical Chemistry A
Springer., 93(13), 2804-2811.
https://doi.org/10.1134/S0036024419130053

Blagojević S, Erić N, Nešović M, Blagojević SN. Micellization and Foamability of Sodium Laureth Sulfate and Polysorbate Surfactant Mixtures. in Russian Journal of Physical Chemistry A. 2019;93(13):2804-2811.
doi:10.1134/S0036024419130053 .

Blagojević, Slavica, Erić, Nataša, Nešović, Milica, Blagojević, Stevan N., "Micellization and Foamability of Sodium Laureth Sulfate and Polysorbate Surfactant Mixtures" in Russian Journal of Physical Chemistry A, 93, no. 13 (2019):2804-2811,
https://doi.org/10.1134/S0036024419130053 . .

TY  - JOUR
AU  - Cervellati, Rinaldo
AU  - Greco, Emanuela
AU  - Blagojević, Slavica
AU  - Blagojević, Stevan
AU  - Anić, Slobodan
AU  - Čupić, Željko
PY  - 2018
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3202
AB  - The system KSCN-H2O2-CuSO4-NaOH, also known as the OrbA n-Epstein oscillatory reaction, is exposed to external perturbations by several phenolic compounds: catechol, resorcinol, hydroquinone, 2,5-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 3,5-dihydroxybenzoic acid, caffeic acid, and ferulic acid. As a result of the performed perturbation in most examined cases, oscillations have been inhibited for some characteristic time, and resumed afterwards. The evaluated inhibition time is typical for each substance and strongly dependent on its concentration. The chemical mechanism of the interaction between the OrbA n-Epstein system and phenolic compounds is briefly discussed. Numerical simulations are performed using the original OrbA n-Epstein model with 30 reactions, extended by three reactions describing the interaction with inhibitory substances. The rate constants of three added reactions are adjusted to fit experimental inhibition times, and compared among used compounds. The observed effects are discussed further in relation with the bond dissociation enthalpy theory. Unlike other tested compounds, 2,5-dihydroxybenzoic acid remains off from predicted order of activity.
PB  - Springer, Dordrecht
T2  - Records of Natural Products
T1  - Experimental and mechanistic study of the inhibitory effects by phenolics on the oscillations of the OrbA n-Epstein Reaction
VL  - 123
IS  - 1
SP  - 125
EP  - 139
DO  - 10.1007/s11144-017-1306-8
ER  - 

@article{
author = "Cervellati, Rinaldo and Greco, Emanuela and Blagojević, Slavica and Blagojević, Stevan and Anić, Slobodan and Čupić, Željko",
year = "2018",
abstract = "The system KSCN-H2O2-CuSO4-NaOH, also known as the OrbA n-Epstein oscillatory reaction, is exposed to external perturbations by several phenolic compounds: catechol, resorcinol, hydroquinone, 2,5-dihydroxybenzoic acid, 2,6-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, 3,5-dihydroxybenzoic acid, caffeic acid, and ferulic acid. As a result of the performed perturbation in most examined cases, oscillations have been inhibited for some characteristic time, and resumed afterwards. The evaluated inhibition time is typical for each substance and strongly dependent on its concentration. The chemical mechanism of the interaction between the OrbA n-Epstein system and phenolic compounds is briefly discussed. Numerical simulations are performed using the original OrbA n-Epstein model with 30 reactions, extended by three reactions describing the interaction with inhibitory substances. The rate constants of three added reactions are adjusted to fit experimental inhibition times, and compared among used compounds. The observed effects are discussed further in relation with the bond dissociation enthalpy theory. Unlike other tested compounds, 2,5-dihydroxybenzoic acid remains off from predicted order of activity.",
publisher = "Springer, Dordrecht",
journal = "Records of Natural Products",
title = "Experimental and mechanistic study of the inhibitory effects by phenolics on the oscillations of the OrbA n-Epstein Reaction",
volume = "123",
number = "1",
pages = "125-139",
doi = "10.1007/s11144-017-1306-8"
}

Cervellati, R., Greco, E., Blagojević, S., Blagojević, S., Anić, S.,& Čupić, Ž.. (2018). Experimental and mechanistic study of the inhibitory effects by phenolics on the oscillations of the OrbA n-Epstein Reaction. in Records of Natural Products
Springer, Dordrecht., 123(1), 125-139.
https://doi.org/10.1007/s11144-017-1306-8

Cervellati R, Greco E, Blagojević S, Blagojević S, Anić S, Čupić Ž. Experimental and mechanistic study of the inhibitory effects by phenolics on the oscillations of the OrbA n-Epstein Reaction. in Records of Natural Products. 2018;123(1):125-139.
doi:10.1007/s11144-017-1306-8 .

Cervellati, Rinaldo, Greco, Emanuela, Blagojević, Slavica, Blagojević, Stevan, Anić, Slobodan, Čupić, Željko, "Experimental and mechanistic study of the inhibitory effects by phenolics on the oscillations of the OrbA n-Epstein Reaction" in Records of Natural Products, 123, no. 1 (2018):125-139,
https://doi.org/10.1007/s11144-017-1306-8 . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Pejić, Nataša
AU  - Blagojević, Stevan
PY  - 2017
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2885
AB  - The physicochemical properties of initial formulation, that is anionic/amphoteric surfactants mixture SLES/AOS/CAB (sodium lauryl ether sulfate (SLES), alpha-olefin sulfonates (AOS) and cocamidopropyl betaine (CAB) at ratio 80 : 15 : 5) with nonionic surfactant of amine oxide type (lauramine oxide (AO)) in various concentration (1-5%) were studied. To characterize the surfactants mixture, the critical micelle concentration (CMC), surface tension (gamma), foam volume, biodegradability and irritability were determined. This study showed that adding of AO in those mixtures lowered both gamma and CMC as well as enhanced SLES/AOS/CAB foaming properties, but did not significantly affect biodegradability and irritability of initial formulation. Moreover, an increase in AO concentration has a meaningful synergistic effect on the initial formulation properties. All those results indicates that a nonionic surfactant of amine oxide type significantly improves the performance of anionic/amphoteric mixed micelle systems, and because of that anionic/amphoteric/nonionic mixture can be used in considerably lower concentrations as a cleaning formulation.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - SAR and QSAR in Environmental Research
T1  - Synergism and Physicochemical Properties of Anionic/Amphoteric Surfactant Mixtures with Nonionic Surfactant of Amine Oxide Type
VL  - 91
IS  - 13
SP  - 2690
EP  - 2695
DO  - 10.1134/S0036024417130064
ER  - 

@article{
author = "Blagojević, Slavica and Pejić, Nataša and Blagojević, Stevan",
year = "2017",
abstract = "The physicochemical properties of initial formulation, that is anionic/amphoteric surfactants mixture SLES/AOS/CAB (sodium lauryl ether sulfate (SLES), alpha-olefin sulfonates (AOS) and cocamidopropyl betaine (CAB) at ratio 80 : 15 : 5) with nonionic surfactant of amine oxide type (lauramine oxide (AO)) in various concentration (1-5%) were studied. To characterize the surfactants mixture, the critical micelle concentration (CMC), surface tension (gamma), foam volume, biodegradability and irritability were determined. This study showed that adding of AO in those mixtures lowered both gamma and CMC as well as enhanced SLES/AOS/CAB foaming properties, but did not significantly affect biodegradability and irritability of initial formulation. Moreover, an increase in AO concentration has a meaningful synergistic effect on the initial formulation properties. All those results indicates that a nonionic surfactant of amine oxide type significantly improves the performance of anionic/amphoteric mixed micelle systems, and because of that anionic/amphoteric/nonionic mixture can be used in considerably lower concentrations as a cleaning formulation.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "SAR and QSAR in Environmental Research",
title = "Synergism and Physicochemical Properties of Anionic/Amphoteric Surfactant Mixtures with Nonionic Surfactant of Amine Oxide Type",
volume = "91",
number = "13",
pages = "2690-2695",
doi = "10.1134/S0036024417130064"
}

Blagojević, S., Pejić, N.,& Blagojević, S.. (2017). Synergism and Physicochemical Properties of Anionic/Amphoteric Surfactant Mixtures with Nonionic Surfactant of Amine Oxide Type. in SAR and QSAR in Environmental Research
Maik Nauka/Interperiodica/Springer, New York., 91(13), 2690-2695.
https://doi.org/10.1134/S0036024417130064

Blagojević S, Pejić N, Blagojević S. Synergism and Physicochemical Properties of Anionic/Amphoteric Surfactant Mixtures with Nonionic Surfactant of Amine Oxide Type. in SAR and QSAR in Environmental Research. 2017;91(13):2690-2695.
doi:10.1134/S0036024417130064 .

Blagojević, Slavica, Pejić, Nataša, Blagojević, Stevan, "Synergism and Physicochemical Properties of Anionic/Amphoteric Surfactant Mixtures with Nonionic Surfactant of Amine Oxide Type" in SAR and QSAR in Environmental Research, 91, no. 13 (2017):2690-2695,
https://doi.org/10.1134/S0036024417130064 . .

TY  - JOUR
AU  - Blagojević, Stevan
AU  - Blagojević, Slavica
AU  - Pejić, Nataša
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2593
AB  - Performance and efficiency of anionic [sodium lauryl ether sulfate (SLES) and sodium alpha-olefin sulfonate (AOS)] and amphoteric [cocamidopropyl betaine (CAB)] as well as nonionic [cocodiethanol amide (DEA), various ethoxylated alcohols (C-12-C-15-7EO, C-10-7EO and C-9-C-11-7EO) and lauramine oxide (AO)] surfactants in various dishwashing liquid mixed micelle systems have been studied at different temperatures (17.0, 23.0 and 42.0 degrees C). The investigated parameters were critical micelle concentration (CMC), surface tension (gamma), cleaning performance and, foaming, biodegradability and irritability of anionic (SLES/AOS) and anionic/amphoteric/nonionic (SLES/AOS/CAB/AO) as well as anionic/nonionic (SLES/AOS/DEA/AO, SLES/AOS/C-12-C-15-7EO/AO, SLES/AOS/C-10-7EO/AO and SLES/AOS/C-9-C-11-7EO/AO) dishwashing surfactant mixtures. In comparison to the starting binary SLES/AOS surfactant mixture, addition of various nonionic surfactants promoted CMC and gamma lowering, enhanced cleaning performance and foaming, but did not significantly affect biodegradability and irritability of dishwashing formulations. The anionic/nonionic formulation SLES/AOS/C-9-C-11-7EO/AO shows both the lowest CMC and gamma as well as the best cleaning performance, compared to the other examined dishwashing formulations. However, the results in this study reveal that synergistic behavior of anionic/nonionic SLES/AOS/ethoxylated alcohols/AO formulations significantly improves dishwashing performance and efficiency at both low and regular dishwashing temperatures (17.0 and 42.0 degrees C) and lead to better application properties.
PB  - Wiley, Hoboken
T2  - Journal of Surfactants and Detergents
T1  - Performance and Efficiency of Anionic Dishwashing Liquids with Amphoteric and Nonionic Surfactants
VL  - 19
IS  - 2
SP  - 363
EP  - 372
DO  - 10.1007/s11743-015-1784-5
ER  - 

@article{
author = "Blagojević, Stevan and Blagojević, Slavica and Pejić, Nataša",
year = "2016",
abstract = "Performance and efficiency of anionic [sodium lauryl ether sulfate (SLES) and sodium alpha-olefin sulfonate (AOS)] and amphoteric [cocamidopropyl betaine (CAB)] as well as nonionic [cocodiethanol amide (DEA), various ethoxylated alcohols (C-12-C-15-7EO, C-10-7EO and C-9-C-11-7EO) and lauramine oxide (AO)] surfactants in various dishwashing liquid mixed micelle systems have been studied at different temperatures (17.0, 23.0 and 42.0 degrees C). The investigated parameters were critical micelle concentration (CMC), surface tension (gamma), cleaning performance and, foaming, biodegradability and irritability of anionic (SLES/AOS) and anionic/amphoteric/nonionic (SLES/AOS/CAB/AO) as well as anionic/nonionic (SLES/AOS/DEA/AO, SLES/AOS/C-12-C-15-7EO/AO, SLES/AOS/C-10-7EO/AO and SLES/AOS/C-9-C-11-7EO/AO) dishwashing surfactant mixtures. In comparison to the starting binary SLES/AOS surfactant mixture, addition of various nonionic surfactants promoted CMC and gamma lowering, enhanced cleaning performance and foaming, but did not significantly affect biodegradability and irritability of dishwashing formulations. The anionic/nonionic formulation SLES/AOS/C-9-C-11-7EO/AO shows both the lowest CMC and gamma as well as the best cleaning performance, compared to the other examined dishwashing formulations. However, the results in this study reveal that synergistic behavior of anionic/nonionic SLES/AOS/ethoxylated alcohols/AO formulations significantly improves dishwashing performance and efficiency at both low and regular dishwashing temperatures (17.0 and 42.0 degrees C) and lead to better application properties.",
publisher = "Wiley, Hoboken",
journal = "Journal of Surfactants and Detergents",
title = "Performance and Efficiency of Anionic Dishwashing Liquids with Amphoteric and Nonionic Surfactants",
volume = "19",
number = "2",
pages = "363-372",
doi = "10.1007/s11743-015-1784-5"
}

Blagojević, S., Blagojević, S.,& Pejić, N.. (2016). Performance and Efficiency of Anionic Dishwashing Liquids with Amphoteric and Nonionic Surfactants. in Journal of Surfactants and Detergents
Wiley, Hoboken., 19(2), 363-372.
https://doi.org/10.1007/s11743-015-1784-5

Blagojević S, Blagojević S, Pejić N. Performance and Efficiency of Anionic Dishwashing Liquids with Amphoteric and Nonionic Surfactants. in Journal of Surfactants and Detergents. 2016;19(2):363-372.
doi:10.1007/s11743-015-1784-5 .

Blagojević, Stevan, Blagojević, Slavica, Pejić, Nataša, "Performance and Efficiency of Anionic Dishwashing Liquids with Amphoteric and Nonionic Surfactants" in Journal of Surfactants and Detergents, 19, no. 2 (2016):363-372,
https://doi.org/10.1007/s11743-015-1784-5 . .

TY  - JOUR
AU  - Čupić, Željko
AU  - Ivanović-Sasic, Ana
AU  - Blagojevic, Stevan
AU  - Blagojević, Slavica
AU  - Kolar-Anić, Ljiljana
AU  - Anić, Slobodan
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2545
AB  - By numerically simulated Bray-Liebhafsky (BL) reaction under a continuously fed well stirred tank reactor (CSTR) conditions, we discussed the attractors and Poincar, 1D maps with respect to flow rate as the control parameter. The new technique of the return maps from transient trajectories over the slow manifold is developed and applied in order to explore its multilayered structure related to dynamical states (periodic and aperiodic -chaotic oscillating modes) of the system. Kinetic relations underlying the slow manifold structure are briefly discussed.
PB  - Springer, Dordrecht
T2  - Records of Natural Products
T1  - Return map analysis of the highly nonlinear Bray-Liebhafsky reaction model
VL  - 118
IS  - 1
SP  - 27
EP  - 38
DO  - 10.1007/s11144-016-0998-5
ER  - 

@article{
author = "Čupić, Željko and Ivanović-Sasic, Ana and Blagojevic, Stevan and Blagojević, Slavica and Kolar-Anić, Ljiljana and Anić, Slobodan",
year = "2016",
abstract = "By numerically simulated Bray-Liebhafsky (BL) reaction under a continuously fed well stirred tank reactor (CSTR) conditions, we discussed the attractors and Poincar, 1D maps with respect to flow rate as the control parameter. The new technique of the return maps from transient trajectories over the slow manifold is developed and applied in order to explore its multilayered structure related to dynamical states (periodic and aperiodic -chaotic oscillating modes) of the system. Kinetic relations underlying the slow manifold structure are briefly discussed.",
publisher = "Springer, Dordrecht",
journal = "Records of Natural Products",
title = "Return map analysis of the highly nonlinear Bray-Liebhafsky reaction model",
volume = "118",
number = "1",
pages = "27-38",
doi = "10.1007/s11144-016-0998-5"
}

Čupić, Ž., Ivanović-Sasic, A., Blagojevic, S., Blagojević, S., Kolar-Anić, L.,& Anić, S.. (2016). Return map analysis of the highly nonlinear Bray-Liebhafsky reaction model. in Records of Natural Products
Springer, Dordrecht., 118(1), 27-38.
https://doi.org/10.1007/s11144-016-0998-5

Čupić Ž, Ivanović-Sasic A, Blagojevic S, Blagojević S, Kolar-Anić L, Anić S. Return map analysis of the highly nonlinear Bray-Liebhafsky reaction model. in Records of Natural Products. 2016;118(1):27-38.
doi:10.1007/s11144-016-0998-5 .

Čupić, Željko, Ivanović-Sasic, Ana, Blagojevic, Stevan, Blagojević, Slavica, Kolar-Anić, Ljiljana, Anić, Slobodan, "Return map analysis of the highly nonlinear Bray-Liebhafsky reaction model" in Records of Natural Products, 118, no. 1 (2016):27-38,
https://doi.org/10.1007/s11144-016-0998-5 . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Blagojević, Stevan
AU  - Begović, Biljana
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2507
AB  - In order to evaluate the safety of selected commercial spices brands, concentration of lead, mercury and arsenic, as well as moisture and mineral contents were analyzed in samples of dried black and white pepper powders, black, white and green peppercorns, black cumin seeds and ginger powder. Lead (Pb), mercury (Hg) and arsenic (As) concentrations in spice samples purchased from local markets in Belgrade were determined, after a microwave digestion of the samples, by atomic absorption spectrometry (AAS), using the graphite furnace AAS technique (Pb), cold vapor AAS technique (Hg) and hydride generation AAS technique (As). Trace levels of Pb, Hg and As in the selected dried spices samples were in the range 0.10 ppm - 0.79 ppm, 0.01 ppm - 0.10 ppm and 0.01 ppm - 0.51 ppm, respectively. The maximum Pb concentration was determined in the sample of ginger and it was 0.79 ppm, the maximum concentration of Hg was 0.10 ppm, determined in green peppercorns samples, while the maximum concentration of As in powdered black pepper sample was 0.51 ppm. The moisture and mineral contents in the different analyzed spices were in the range 1.70-13.10% and 3.40-6.50%, respectively. According to the obtained results, the concentrations of the analyzed toxic elements, as well as the moisture and mineral content in selected spices, were below the maximum permissible limits declared by the national legislations deemed safe for human consumption.
AB  - U ovom radu, u cilju utvrđivanja bezbednosti odabranih komercijalnih začina, analizirane su koncentracije teških metala, kao i sadržaj vlage i ukupnih mineralnih materija, u uzorcima sušenog crnog i belog bibera u prahu, crnog, belog i zelenog bibera u zrnu, semena crnog kima i đumbira u prahu. Koncentracije olova (Pb), žive (Hg) i arsena (As) u uzorcima začina iz lokalnih prodavnica u Beogradu, određene su nakon mikrotalasne digestije atomskom apsorcionom spektrometrijom (AAS), primenom tehnike grafitne peći (Pb), tehnike hladne pare (Hg) i hidridne tehnike (As). Određene koncentracije Pb, Hg i As u uzorcima sušenih začina su u opsegu 0,10 ppm - 0,79 ppm, 0,01 ppm - 0,10 ppm i 0,01 ppm - 0,51 ppm, redom. Maksimalna koncentracija Pb od 0,79 ppm određena je u uzorku đumbira, maksimalna koncentracija Hg od 0,10 ppm u uzorcima zelenog bibera u zrnu, dok je maksimalna koncentracija As određena u uzorku crnog bibera u prahu i iznosila je 0,51 ppm. U uzorcima ispitivanih začina sadržaj vlage i mineralnih materija je u opsegu 1,70-13,10% i 3,40-6,50%, redom. Dobijeni rezultati pokazuju da su koncentracije ispitivanih teških metala, kao i sadržaj vlage i mineralnih materija ispod maksimalno dozvoljenih vrednosti propisanih zakonskom regulativom Republike Srbije, kao i da su ispitivani uzorci crnog, belog i zelenog bibera u prahu i zrnu, crnog kima u zrnu i đumbira u prahu propisanog kvaliteta u ovom smislu.
PB  - Univerzitet u Nišu, Niš
T2  - Facta universitatis - series: Physics, Chemistry and Technology
T1  - Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger
T1  - Sadržaj olova, žive i arsena u začinima - crni, beli i zeleni biber, crni kim i đumbir
VL  - 13
IS  - 3
SP  - 191
EP  - 202
DO  - 10.2298/FUPCT1503191B
ER  - 

@article{
author = "Blagojević, Slavica and Blagojević, Stevan and Begović, Biljana",
year = "2015",
abstract = "In order to evaluate the safety of selected commercial spices brands, concentration of lead, mercury and arsenic, as well as moisture and mineral contents were analyzed in samples of dried black and white pepper powders, black, white and green peppercorns, black cumin seeds and ginger powder. Lead (Pb), mercury (Hg) and arsenic (As) concentrations in spice samples purchased from local markets in Belgrade were determined, after a microwave digestion of the samples, by atomic absorption spectrometry (AAS), using the graphite furnace AAS technique (Pb), cold vapor AAS technique (Hg) and hydride generation AAS technique (As). Trace levels of Pb, Hg and As in the selected dried spices samples were in the range 0.10 ppm - 0.79 ppm, 0.01 ppm - 0.10 ppm and 0.01 ppm - 0.51 ppm, respectively. The maximum Pb concentration was determined in the sample of ginger and it was 0.79 ppm, the maximum concentration of Hg was 0.10 ppm, determined in green peppercorns samples, while the maximum concentration of As in powdered black pepper sample was 0.51 ppm. The moisture and mineral contents in the different analyzed spices were in the range 1.70-13.10% and 3.40-6.50%, respectively. According to the obtained results, the concentrations of the analyzed toxic elements, as well as the moisture and mineral content in selected spices, were below the maximum permissible limits declared by the national legislations deemed safe for human consumption., U ovom radu, u cilju utvrđivanja bezbednosti odabranih komercijalnih začina, analizirane su koncentracije teških metala, kao i sadržaj vlage i ukupnih mineralnih materija, u uzorcima sušenog crnog i belog bibera u prahu, crnog, belog i zelenog bibera u zrnu, semena crnog kima i đumbira u prahu. Koncentracije olova (Pb), žive (Hg) i arsena (As) u uzorcima začina iz lokalnih prodavnica u Beogradu, određene su nakon mikrotalasne digestije atomskom apsorcionom spektrometrijom (AAS), primenom tehnike grafitne peći (Pb), tehnike hladne pare (Hg) i hidridne tehnike (As). Određene koncentracije Pb, Hg i As u uzorcima sušenih začina su u opsegu 0,10 ppm - 0,79 ppm, 0,01 ppm - 0,10 ppm i 0,01 ppm - 0,51 ppm, redom. Maksimalna koncentracija Pb od 0,79 ppm određena je u uzorku đumbira, maksimalna koncentracija Hg od 0,10 ppm u uzorcima zelenog bibera u zrnu, dok je maksimalna koncentracija As određena u uzorku crnog bibera u prahu i iznosila je 0,51 ppm. U uzorcima ispitivanih začina sadržaj vlage i mineralnih materija je u opsegu 1,70-13,10% i 3,40-6,50%, redom. Dobijeni rezultati pokazuju da su koncentracije ispitivanih teških metala, kao i sadržaj vlage i mineralnih materija ispod maksimalno dozvoljenih vrednosti propisanih zakonskom regulativom Republike Srbije, kao i da su ispitivani uzorci crnog, belog i zelenog bibera u prahu i zrnu, crnog kima u zrnu i đumbira u prahu propisanog kvaliteta u ovom smislu.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta universitatis - series: Physics, Chemistry and Technology",
title = "Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger, Sadržaj olova, žive i arsena u začinima - crni, beli i zeleni biber, crni kim i đumbir",
volume = "13",
number = "3",
pages = "191-202",
doi = "10.2298/FUPCT1503191B"
}

Blagojević, S., Blagojević, S.,& Begović, B.. (2015). Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger. in Facta universitatis - series: Physics, Chemistry and Technology
Univerzitet u Nišu, Niš., 13(3), 191-202.
https://doi.org/10.2298/FUPCT1503191B

Blagojević S, Blagojević S, Begović B. Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger. in Facta universitatis - series: Physics, Chemistry and Technology. 2015;13(3):191-202.
doi:10.2298/FUPCT1503191B .

Blagojević, Slavica, Blagojević, Stevan, Begović, Biljana, "Lead, mercury and arsenic content in spices: Black, white and green pepper, black cumin and ginger" in Facta universitatis - series: Physics, Chemistry and Technology, 13, no. 3 (2015):191-202,
https://doi.org/10.2298/FUPCT1503191B . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Pastor, Ferenc T.
AU  - Borić, Ivan
AU  - Erić, Nataša M.
AU  - Sužnjević, Desanka Ž.
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2493
AB  - Commercially formulated anti-dandruff shampoos contain zinc pyrithione (ZPT) as an active ingredient that has antifungal, antibacterial and anti-seborrheic properties. The determination of ZPT concentration in commercial anti-dandruff shampoos by differential pulse polarography (DPP) was based on the electrochemical reduction of zinc ions in ammoniacal buffer pH 10.2, and the linear dependence of the reduction differential pulse peak current at the potential - 1.33 V vs. concentration of zinc. Using the calibration curve method, it was found that the range of linearity for the determination of zinc concentration was from 1.28 x 10-5 to 1.39 x 10-4 mol L‒1 (linear regression equation: I = - 0.097 + 6.635 x 105c). Surface active ingredients and micro-components in the shampoos did not exert a polarographic interference for the determination of zinc and did not affect the indirect determination of the content of the active ingredient ZPT. The concentrations of zinc in the analyzed anti-dandruff shampoo samples were determined by the standard addition method, resulting in 4.20 x 10‒2 mol L‒1, 1.76 x 10‒1 mol L‒1 and 1.82 x 10‒1 mol L‒1. The results of DPP determinations of zinc and ZPT show that the content of ZPT was 0.28%, 1.15% i.e. 1.19% and was below the maximum recommended level of ZPT in anti-dandruff shampoos. This simple and sensitive differential pulse polarography method is suitable for a routine and rapid control of the active ingredient content, as well as for the quality control of anti-dandruff shampoos.
AB  - Aktivni sastojak komercijalno formulisanih šampona protiv peruti je cink-pirition, koji ima antifungalno, antibakterijsko i antiseboreično dejstvo. Određivanje cink-piritiona u šamponima protiv peruti primenom metode diferencijalne pulsne polarografije zasnivalo se na elektrohemijskoj redukciji jona cinka u amonijačnom puferu pH 10,2 i linearnoj zavisnosti intenziteta struje pika na redukcionom potencijalu - 1,33 V i koncentracije cinka. Metodom kalibracione krive je određen opseg linearnosti za određivanje koncentracije cinka od 1,28 x 10‒5 do 1,39 x 10‒4 mol L-1 i dobijena je linearna regresiona jednačina I = - 0,097 + 6,635 x 105c. Utvrđeno je da površinski aktivne komponente u matriksu šampona ne pokazuju polarografsku interferenciju i ne utiču na određivanje koncentracije cinka i sadržaja cink-piritiona u analiziranim šamponima. Koncentracije cinka u analiziranim uzorcima šampona određene su metodom standardnog dodatka i iznose 4,20 x 10‒2 mol L-1, 1,76 ' 10‒1 mol L-1 i 1,82 x 10‒1 mol L-1. Rezultati polarografskog određivanja cinka i sadržaja cink-piritiona pokazuju da su dobijene vrednosti cink-piritiona 0,28%, 1,15% i 1,19% ispod maksimalno preporučenog sadržaja cink-piritiona u šamponima protiv peruti. Ova jednostavna i osetljiva metoda diferencijalno pulsne polarografije pogodna je za rutinsko i brzo određivanje sadržaja aktivnog sastojka i kontrolu kvaliteta šampona protiv peruti.
PB  - Univerzitet u Nišu, Niš
T2  - Facta universitatis - series: Physics, Chemistry and Technology
T1  - The application of DP polarography for the determination of zinc and content of zinc pyrithione in anti-dandruff shampoos
T1  - Primena DP polarografije za određivanje cinka i sadržaja cink-piritiona u šamponima protiv peruti
VL  - 13
IS  - 3
SP  - 181
EP  - 190
DO  - 10.2298/FUPCT1503181B
ER  - 

@article{
author = "Blagojević, Slavica and Pastor, Ferenc T. and Borić, Ivan and Erić, Nataša M. and Sužnjević, Desanka Ž.",
year = "2015",
abstract = "Commercially formulated anti-dandruff shampoos contain zinc pyrithione (ZPT) as an active ingredient that has antifungal, antibacterial and anti-seborrheic properties. The determination of ZPT concentration in commercial anti-dandruff shampoos by differential pulse polarography (DPP) was based on the electrochemical reduction of zinc ions in ammoniacal buffer pH 10.2, and the linear dependence of the reduction differential pulse peak current at the potential - 1.33 V vs. concentration of zinc. Using the calibration curve method, it was found that the range of linearity for the determination of zinc concentration was from 1.28 x 10-5 to 1.39 x 10-4 mol L‒1 (linear regression equation: I = - 0.097 + 6.635 x 105c). Surface active ingredients and micro-components in the shampoos did not exert a polarographic interference for the determination of zinc and did not affect the indirect determination of the content of the active ingredient ZPT. The concentrations of zinc in the analyzed anti-dandruff shampoo samples were determined by the standard addition method, resulting in 4.20 x 10‒2 mol L‒1, 1.76 x 10‒1 mol L‒1 and 1.82 x 10‒1 mol L‒1. The results of DPP determinations of zinc and ZPT show that the content of ZPT was 0.28%, 1.15% i.e. 1.19% and was below the maximum recommended level of ZPT in anti-dandruff shampoos. This simple and sensitive differential pulse polarography method is suitable for a routine and rapid control of the active ingredient content, as well as for the quality control of anti-dandruff shampoos., Aktivni sastojak komercijalno formulisanih šampona protiv peruti je cink-pirition, koji ima antifungalno, antibakterijsko i antiseboreično dejstvo. Određivanje cink-piritiona u šamponima protiv peruti primenom metode diferencijalne pulsne polarografije zasnivalo se na elektrohemijskoj redukciji jona cinka u amonijačnom puferu pH 10,2 i linearnoj zavisnosti intenziteta struje pika na redukcionom potencijalu - 1,33 V i koncentracije cinka. Metodom kalibracione krive je određen opseg linearnosti za određivanje koncentracije cinka od 1,28 x 10‒5 do 1,39 x 10‒4 mol L-1 i dobijena je linearna regresiona jednačina I = - 0,097 + 6,635 x 105c. Utvrđeno je da površinski aktivne komponente u matriksu šampona ne pokazuju polarografsku interferenciju i ne utiču na određivanje koncentracije cinka i sadržaja cink-piritiona u analiziranim šamponima. Koncentracije cinka u analiziranim uzorcima šampona određene su metodom standardnog dodatka i iznose 4,20 x 10‒2 mol L-1, 1,76 ' 10‒1 mol L-1 i 1,82 x 10‒1 mol L-1. Rezultati polarografskog određivanja cinka i sadržaja cink-piritiona pokazuju da su dobijene vrednosti cink-piritiona 0,28%, 1,15% i 1,19% ispod maksimalno preporučenog sadržaja cink-piritiona u šamponima protiv peruti. Ova jednostavna i osetljiva metoda diferencijalno pulsne polarografije pogodna je za rutinsko i brzo određivanje sadržaja aktivnog sastojka i kontrolu kvaliteta šampona protiv peruti.",
publisher = "Univerzitet u Nišu, Niš",
journal = "Facta universitatis - series: Physics, Chemistry and Technology",
title = "The application of DP polarography for the determination of zinc and content of zinc pyrithione in anti-dandruff shampoos, Primena DP polarografije za određivanje cinka i sadržaja cink-piritiona u šamponima protiv peruti",
volume = "13",
number = "3",
pages = "181-190",
doi = "10.2298/FUPCT1503181B"
}

Blagojević, S., Pastor, F. T., Borić, I., Erić, N. M.,& Sužnjević, D. Ž.. (2015). The application of DP polarography for the determination of zinc and content of zinc pyrithione in anti-dandruff shampoos. in Facta universitatis - series: Physics, Chemistry and Technology
Univerzitet u Nišu, Niš., 13(3), 181-190.
https://doi.org/10.2298/FUPCT1503181B

Blagojević S, Pastor FT, Borić I, Erić NM, Sužnjević DŽ. The application of DP polarography for the determination of zinc and content of zinc pyrithione in anti-dandruff shampoos. in Facta universitatis - series: Physics, Chemistry and Technology. 2015;13(3):181-190.
doi:10.2298/FUPCT1503181B .

Blagojević, Slavica, Pastor, Ferenc T., Borić, Ivan, Erić, Nataša M., Sužnjević, Desanka Ž., "The application of DP polarography for the determination of zinc and content of zinc pyrithione in anti-dandruff shampoos" in Facta universitatis - series: Physics, Chemistry and Technology, 13, no. 3 (2015):181-190,
https://doi.org/10.2298/FUPCT1503181B . .

TY  - JOUR
AU  - Macesic, Stevan R.
AU  - Čupić, Željko
AU  - Blagojević, Slavica
AU  - Pejić, Nataša
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2015
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2455
AB  - In stoichiometric network analysis (SNA) the instability condition is calculated by the current rates. Recently, we have shown that in the final result the current rates can be substituted by reaction rates, which is a more appropriate value for the examination of instability from experimental point of view. Here, we elaborate the problem of whether the current rates are necessary parameters in the calculation, with the aim of obtaining the region of instability. All calculations are performed on a model for Belousov-Zhabotinsky (BZ) reaction, which has not been examined by SNA.
PB  - De Gruyter Open Ltd, Warsaw
T2  - Open Chemistry
T1  - Current rates and reaction rates in the Stoichiometric Network Analysis (SNA)
VL  - 13
IS  - 1
SP  - 591
EP  - 599
DO  - 10.1515/chem-2015-0077
ER  - 

@article{
author = "Macesic, Stevan R. and Čupić, Željko and Blagojević, Slavica and Pejić, Nataša and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2015",
abstract = "In stoichiometric network analysis (SNA) the instability condition is calculated by the current rates. Recently, we have shown that in the final result the current rates can be substituted by reaction rates, which is a more appropriate value for the examination of instability from experimental point of view. Here, we elaborate the problem of whether the current rates are necessary parameters in the calculation, with the aim of obtaining the region of instability. All calculations are performed on a model for Belousov-Zhabotinsky (BZ) reaction, which has not been examined by SNA.",
publisher = "De Gruyter Open Ltd, Warsaw",
journal = "Open Chemistry",
title = "Current rates and reaction rates in the Stoichiometric Network Analysis (SNA)",
volume = "13",
number = "1",
pages = "591-599",
doi = "10.1515/chem-2015-0077"
}

Macesic, S. R., Čupić, Ž., Blagojević, S., Pejić, N., Anić, S.,& Kolar-Anić, L.. (2015). Current rates and reaction rates in the Stoichiometric Network Analysis (SNA). in Open Chemistry
De Gruyter Open Ltd, Warsaw., 13(1), 591-599.
https://doi.org/10.1515/chem-2015-0077

Macesic SR, Čupić Ž, Blagojević S, Pejić N, Anić S, Kolar-Anić L. Current rates and reaction rates in the Stoichiometric Network Analysis (SNA). in Open Chemistry. 2015;13(1):591-599.
doi:10.1515/chem-2015-0077 .

Macesic, Stevan R., Čupić, Željko, Blagojević, Slavica, Pejić, Nataša, Anić, Slobodan, Kolar-Anić, Ljiljana, "Current rates and reaction rates in the Stoichiometric Network Analysis (SNA)" in Open Chemistry, 13, no. 1 (2015):591-599,
https://doi.org/10.1515/chem-2015-0077 . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
AU  - Sarap, Nataša B.
AU  - Maksimović, Jelena
AU  - Anić, Slobodan
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
PY  - 2014
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2172
AB  - Perturbation of the BrayLiebhafsky non-oscillating subsystem (mixture of KIO3 and H2SO4), i.e., Dushman reaction (DR), by piroxicam (PX), was observed in an open reactor, i.e., in the continuously fed well-stirred tank reactor (CSTR). Monitoring the response of DR to perturbations by different concentrations of PX allows developing a simple procedure for quantitative determination of this analyte in both bulk drug and pharmaceutical preparation (injection). A tentative perturbation mechanism of PX action on the DR matrix, based on a kinetic scheme that was suggested by Agreda etal., is proposed. The PX reactivity in DR has been generally related to the reaction of PX with hypoiodous acid (HIO) present in the matrix.
PB  - Wiley-VCH Verlag GMBH, Weinheim
T2  - Helvetica Chimica Acta
T1  - Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations
VL  - 97
IS  - 1
SP  - 47
EP  - 55
DO  - 10.1002/hlca.201300109
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica and Sarap, Nataša B. and Maksimović, Jelena and Anić, Slobodan and Čupić, Željko and Kolar-Anić, Ljiljana",
year = "2014",
abstract = "Perturbation of the BrayLiebhafsky non-oscillating subsystem (mixture of KIO3 and H2SO4), i.e., Dushman reaction (DR), by piroxicam (PX), was observed in an open reactor, i.e., in the continuously fed well-stirred tank reactor (CSTR). Monitoring the response of DR to perturbations by different concentrations of PX allows developing a simple procedure for quantitative determination of this analyte in both bulk drug and pharmaceutical preparation (injection). A tentative perturbation mechanism of PX action on the DR matrix, based on a kinetic scheme that was suggested by Agreda etal., is proposed. The PX reactivity in DR has been generally related to the reaction of PX with hypoiodous acid (HIO) present in the matrix.",
publisher = "Wiley-VCH Verlag GMBH, Weinheim",
journal = "Helvetica Chimica Acta",
title = "Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations",
volume = "97",
number = "1",
pages = "47-55",
doi = "10.1002/hlca.201300109"
}

Pejić, N., Blagojević, S., Sarap, N. B., Maksimović, J., Anić, S., Čupić, Ž.,& Kolar-Anić, L.. (2014). Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations. in Helvetica Chimica Acta
Wiley-VCH Verlag GMBH, Weinheim., 97(1), 47-55.
https://doi.org/10.1002/hlca.201300109

Pejić N, Blagojević S, Sarap NB, Maksimović J, Anić S, Čupić Ž, Kolar-Anić L. Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations. in Helvetica Chimica Acta. 2014;97(1):47-55.
doi:10.1002/hlca.201300109 .

Pejić, Nataša, Blagojević, Slavica, Sarap, Nataša B., Maksimović, Jelena, Anić, Slobodan, Čupić, Željko, Kolar-Anić, Ljiljana, "Perturbations of the Dushman Reaction with Piroxicam: Experimental and Model Calculations" in Helvetica Chimica Acta, 97, no. 1 (2014):47-55,
https://doi.org/10.1002/hlca.201300109 . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Blagojević, Stevan
AU  - Pejić, Nataša
AU  - Begović, Biljana
AU  - Gajinov, Spasenka P.
PY  - 2013
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1938
AB  - In this study, in order to evaluate the quality and safety of selected commercial spices brands, contents of moisture and minerals, as well as the concentration of certain heavy metals (As, Hg and Pb) were determined in oregano, sweet basil, parsley and celery. The spice samples were subjected to microwave digestion, and were analyzed by atomic absorption spectrometry (AAS), using hydride generation AAS technique, cold vapor AAS technique, and graphite furnace AAS technique for determination of As, Hg and Pb, respectively. Maximum concentrations of As and Pb were determined in the same brand sample of celery, and are 0.75 ppm and 0.40 ppm, respectively, while the maximum concentration of Hg in various brands sweet basil samples is 0.05 ppm. According to the results, the contents of moisture and minerals, as well as the concentrations of heavy metals in all selected spices were below the maximum permissible limits declared by the national legislations, and are safe for human consumption.
AB  - U ovom radu, u cilju određivanja kvaliteta i bezbednosti izabranih začina, određen je sadržaj vlage i ukupnih mineralnih materija, kao i koncentracije arsena (As), žive (Hg) i olova (Pb) u uzorcima origana, bosiljka, peršuna i celera. Koncentracije teških metala As, Hg i Pb, nakon mikrotalasne digestije, određene su različitim analitičkim tehnikama atomske apsorcione spektrometrije, primenom hidridne tehnike (As), tehnike hladne pare (Hg) i tehnike grafitne peći (Pb). Maksimalne koncentracije As i Pb određene su u istom uzorku celera i iznose 0,75 ppm i 0,40 ppm, respektivno, dok je maksimalna koncentracija Hg određena u uzorcima bosiljka i iznosi 0,05 ppm. U uzorcima začina, vrednosti sadržaja vlage, minerala i koncentracije ispitivanih teških metala su ispod maksimalno dozvoljenih vrednosti propisanih zakonskom regulativom Republike Srbije.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta periodica technologica
T1  - Quality and safety of some commercial spices brands
T1  - Kvalitet i bezbednost nekih komercijalnih začina
IS  - 44
SP  - 1
EP  - 9
DO  - 10.2298/APT1344001B
ER  - 

@article{
author = "Blagojević, Slavica and Blagojević, Stevan and Pejić, Nataša and Begović, Biljana and Gajinov, Spasenka P.",
year = "2013",
abstract = "In this study, in order to evaluate the quality and safety of selected commercial spices brands, contents of moisture and minerals, as well as the concentration of certain heavy metals (As, Hg and Pb) were determined in oregano, sweet basil, parsley and celery. The spice samples were subjected to microwave digestion, and were analyzed by atomic absorption spectrometry (AAS), using hydride generation AAS technique, cold vapor AAS technique, and graphite furnace AAS technique for determination of As, Hg and Pb, respectively. Maximum concentrations of As and Pb were determined in the same brand sample of celery, and are 0.75 ppm and 0.40 ppm, respectively, while the maximum concentration of Hg in various brands sweet basil samples is 0.05 ppm. According to the results, the contents of moisture and minerals, as well as the concentrations of heavy metals in all selected spices were below the maximum permissible limits declared by the national legislations, and are safe for human consumption., U ovom radu, u cilju određivanja kvaliteta i bezbednosti izabranih začina, određen je sadržaj vlage i ukupnih mineralnih materija, kao i koncentracije arsena (As), žive (Hg) i olova (Pb) u uzorcima origana, bosiljka, peršuna i celera. Koncentracije teških metala As, Hg i Pb, nakon mikrotalasne digestije, određene su različitim analitičkim tehnikama atomske apsorcione spektrometrije, primenom hidridne tehnike (As), tehnike hladne pare (Hg) i tehnike grafitne peći (Pb). Maksimalne koncentracije As i Pb određene su u istom uzorku celera i iznose 0,75 ppm i 0,40 ppm, respektivno, dok je maksimalna koncentracija Hg određena u uzorcima bosiljka i iznosi 0,05 ppm. U uzorcima začina, vrednosti sadržaja vlage, minerala i koncentracije ispitivanih teških metala su ispod maksimalno dozvoljenih vrednosti propisanih zakonskom regulativom Republike Srbije.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta periodica technologica",
title = "Quality and safety of some commercial spices brands, Kvalitet i bezbednost nekih komercijalnih začina",
number = "44",
pages = "1-9",
doi = "10.2298/APT1344001B"
}

Blagojević, S., Blagojević, S., Pejić, N., Begović, B.,& Gajinov, S. P.. (2013). Quality and safety of some commercial spices brands. in Acta periodica technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad.(44), 1-9.
https://doi.org/10.2298/APT1344001B

Blagojević S, Blagojević S, Pejić N, Begović B, Gajinov SP. Quality and safety of some commercial spices brands. in Acta periodica technologica. 2013;(44):1-9.
doi:10.2298/APT1344001B .

Blagojević, Slavica, Blagojević, Stevan, Pejić, Nataša, Begović, Biljana, Gajinov, Spasenka P., "Quality and safety of some commercial spices brands" in Acta periodica technologica, no. 44 (2013):1-9,
https://doi.org/10.2298/APT1344001B . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Maksimović, Jelena
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Čupić, Željko
AU  - Kolar-Anić, Ljiljana
PY  - 2012
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1655
AB  - Simple and reliable novel methods for the determination of uric acid (UA) are proposed and validated. For quantitative determination of UA, two matrices were used: the Bray-Liebhafsky (BL) oscillatory reaction in a stable non-equilibrium stationary state close to the bifurcation point (method A) as well as, the BL non-oscillating subsystem (mixture KIO3 and H2SO4), i.e., Dushman reaction (DR) in a steady state (method B). The proposed methods are optimized in a continuously fed well stirred tank reactor (CSTR) and applied with excellent results in the determination of UA in human urine samples. The linear relationship between maximal potential shift Delta E-m, and both the logarithm of the UA concentration (procedure A) and UA concentration (procedure B) is obtained in the concentration range 2.98 x 10(-5)-2.68 x 10(-4) mol L-1 and 2.98 x 10(-5)-3.58 x 10(-4) mol L-1, respectively. The methods have an excellent sample throughput of 30 samples h(-1) (method A) and 7 samples h(-1) (method B) with the sensitivity determined to be 1.1 x 10(-5) mol L-1 (method A) and 8.9 x 10(-6) mol L-1 (method B) as well as the precision RSD  lt = 3.4% for both methods. Some aspects of the possible mechanism of UA action on the BL oscillating and Duschman non-oscillating reaction systems are discussed in detail.
PB  - Soc Brasileira Quimica, Sao Paulo
T2  - Journal of the Brazilian Chemical Society
T1  - Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique
VL  - 23
IS  - 8
SP  - 1450
EP  - 1459
UR  - https://hdl.handle.net/21.15107/rcub_farfar_1655
ER  - 

@article{
author = "Pejić, Nataša and Maksimović, Jelena and Blagojević, Slavica and Anić, Slobodan and Čupić, Željko and Kolar-Anić, Ljiljana",
year = "2012",
abstract = "Simple and reliable novel methods for the determination of uric acid (UA) are proposed and validated. For quantitative determination of UA, two matrices were used: the Bray-Liebhafsky (BL) oscillatory reaction in a stable non-equilibrium stationary state close to the bifurcation point (method A) as well as, the BL non-oscillating subsystem (mixture KIO3 and H2SO4), i.e., Dushman reaction (DR) in a steady state (method B). The proposed methods are optimized in a continuously fed well stirred tank reactor (CSTR) and applied with excellent results in the determination of UA in human urine samples. The linear relationship between maximal potential shift Delta E-m, and both the logarithm of the UA concentration (procedure A) and UA concentration (procedure B) is obtained in the concentration range 2.98 x 10(-5)-2.68 x 10(-4) mol L-1 and 2.98 x 10(-5)-3.58 x 10(-4) mol L-1, respectively. The methods have an excellent sample throughput of 30 samples h(-1) (method A) and 7 samples h(-1) (method B) with the sensitivity determined to be 1.1 x 10(-5) mol L-1 (method A) and 8.9 x 10(-6) mol L-1 (method B) as well as the precision RSD  lt = 3.4% for both methods. Some aspects of the possible mechanism of UA action on the BL oscillating and Duschman non-oscillating reaction systems are discussed in detail.",
publisher = "Soc Brasileira Quimica, Sao Paulo",
journal = "Journal of the Brazilian Chemical Society",
title = "Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique",
volume = "23",
number = "8",
pages = "1450-1459",
url = "https://hdl.handle.net/21.15107/rcub_farfar_1655"
}

Pejić, N., Maksimović, J., Blagojević, S., Anić, S., Čupić, Ž.,& Kolar-Anić, L.. (2012). Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique. in Journal of the Brazilian Chemical Society
Soc Brasileira Quimica, Sao Paulo., 23(8), 1450-1459.
https://hdl.handle.net/21.15107/rcub_farfar_1655

Pejić N, Maksimović J, Blagojević S, Anić S, Čupić Ž, Kolar-Anić L. Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique. in Journal of the Brazilian Chemical Society. 2012;23(8):1450-1459.
https://hdl.handle.net/21.15107/rcub_farfar_1655 .

Pejić, Nataša, Maksimović, Jelena, Blagojević, Slavica, Anić, Slobodan, Čupić, Željko, Kolar-Anić, Ljiljana, "Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique" in Journal of the Brazilian Chemical Society, 23, no. 8 (2012):1450-1459,
https://hdl.handle.net/21.15107/rcub_farfar_1655 .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Čupić, Željko
PY  - 2011
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1515
AB  - In the already proposed model of the Belousov-Zhabotinsky reaction with the Br(2)O species as intermediate one, the reactions with malonyl (MA(center dot)), bromomalonyl (BrMA(center dot)) and tartronyl (TA(center dot)) radicals were introduced with aim to explore their role in overall dynamics. The related numerical simulations of the experimentally obtained dynamic states under batch conditions were successfully performed.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - SAR and QSAR in Environmental Research
T1  - Influence of most important radicals on the numerically simulated belousov-zhabotinsky oscillatory reaction under batch conditions
VL  - 85
IS  - 13
SP  - 2274
EP  - 2278
DO  - 10.1134/S003602441113005X
ER  - 

@article{
author = "Blagojević, Slavica and Anić, Slobodan and Čupić, Željko",
year = "2011",
abstract = "In the already proposed model of the Belousov-Zhabotinsky reaction with the Br(2)O species as intermediate one, the reactions with malonyl (MA(center dot)), bromomalonyl (BrMA(center dot)) and tartronyl (TA(center dot)) radicals were introduced with aim to explore their role in overall dynamics. The related numerical simulations of the experimentally obtained dynamic states under batch conditions were successfully performed.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "SAR and QSAR in Environmental Research",
title = "Influence of most important radicals on the numerically simulated belousov-zhabotinsky oscillatory reaction under batch conditions",
volume = "85",
number = "13",
pages = "2274-2278",
doi = "10.1134/S003602441113005X"
}

Blagojević, S., Anić, S.,& Čupić, Ž.. (2011). Influence of most important radicals on the numerically simulated belousov-zhabotinsky oscillatory reaction under batch conditions. in SAR and QSAR in Environmental Research
Maik Nauka/Interperiodica/Springer, New York., 85(13), 2274-2278.
https://doi.org/10.1134/S003602441113005X

Blagojević S, Anić S, Čupić Ž. Influence of most important radicals on the numerically simulated belousov-zhabotinsky oscillatory reaction under batch conditions. in SAR and QSAR in Environmental Research. 2011;85(13):2274-2278.
doi:10.1134/S003602441113005X .

Blagojević, Slavica, Anić, Slobodan, Čupić, Željko, "Influence of most important radicals on the numerically simulated belousov-zhabotinsky oscillatory reaction under batch conditions" in SAR and QSAR in Environmental Research, 85, no. 13 (2011):2274-2278,
https://doi.org/10.1134/S003602441113005X . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Čupić, Željko
AU  - Pejić, Nataša
AU  - Kolar-Anić, Ljiljana
PY  - 2009
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1254
AB  - The kinetic investigations of the malonic acid decomposition (8.00 x 10(-3) mol dm(-3) a parts per thousand currency sign [CH(2)(COOH)(2)](0) a parts per thousand currency sign 4.30 x 10(-2) mol dm(-3)) in the Belousov-Zhabotinsky (BZ) system in the presence of bromate, bromide, sulfuric acid and cerium sulfate, were performed in the isothermal closed well stirred reactor at different temperatures (25.0A degrees C a parts per thousand currency sign T a parts per thousand currency sign 45.0A degrees C). The formal kinetics of the overall BZ reaction, and particularly kinetics in characteristic periods of BZ reaction, based on the analyses of the bromide oscillograms, was accomplished. The evolution as well as the rate constants and the apparent activation energies of the reactions, which exist in the preoscillatory and oscillatory periods, are also successfully calculated by numerical simulations. Simulations are based on the model including the Br(2)O species.
PB  - Maik Nauka/Interperiodica/Springer, New York
T2  - SAR and QSAR in Environmental Research
T1  - Temperature influence on the malonic acid decomposition in the Belousov-Zhabotinsky reaction
VL  - 83
IS  - 9
SP  - 1496
EP  - 1501
DO  - 10.1134/S0036024409090143
ER  - 

@article{
author = "Blagojević, Slavica and Anić, Slobodan and Čupić, Željko and Pejić, Nataša and Kolar-Anić, Ljiljana",
year = "2009",
abstract = "The kinetic investigations of the malonic acid decomposition (8.00 x 10(-3) mol dm(-3) a parts per thousand currency sign [CH(2)(COOH)(2)](0) a parts per thousand currency sign 4.30 x 10(-2) mol dm(-3)) in the Belousov-Zhabotinsky (BZ) system in the presence of bromate, bromide, sulfuric acid and cerium sulfate, were performed in the isothermal closed well stirred reactor at different temperatures (25.0A degrees C a parts per thousand currency sign T a parts per thousand currency sign 45.0A degrees C). The formal kinetics of the overall BZ reaction, and particularly kinetics in characteristic periods of BZ reaction, based on the analyses of the bromide oscillograms, was accomplished. The evolution as well as the rate constants and the apparent activation energies of the reactions, which exist in the preoscillatory and oscillatory periods, are also successfully calculated by numerical simulations. Simulations are based on the model including the Br(2)O species.",
publisher = "Maik Nauka/Interperiodica/Springer, New York",
journal = "SAR and QSAR in Environmental Research",
title = "Temperature influence on the malonic acid decomposition in the Belousov-Zhabotinsky reaction",
volume = "83",
number = "9",
pages = "1496-1501",
doi = "10.1134/S0036024409090143"
}

Blagojević, S., Anić, S., Čupić, Ž., Pejić, N.,& Kolar-Anić, L.. (2009). Temperature influence on the malonic acid decomposition in the Belousov-Zhabotinsky reaction. in SAR and QSAR in Environmental Research
Maik Nauka/Interperiodica/Springer, New York., 83(9), 1496-1501.
https://doi.org/10.1134/S0036024409090143

Blagojević S, Anić S, Čupić Ž, Pejić N, Kolar-Anić L. Temperature influence on the malonic acid decomposition in the Belousov-Zhabotinsky reaction. in SAR and QSAR in Environmental Research. 2009;83(9):1496-1501.
doi:10.1134/S0036024409090143 .

Blagojević, Slavica, Anić, Slobodan, Čupić, Željko, Pejić, Nataša, Kolar-Anić, Ljiljana, "Temperature influence on the malonic acid decomposition in the Belousov-Zhabotinsky reaction" in SAR and QSAR in Environmental Research, 83, no. 9 (2009):1496-1501,
https://doi.org/10.1134/S0036024409090143 . .

TY  - JOUR
AU  - Blagojević, Slavica
PY  - 2009
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1192
AB  - Several known models of the Belousov-Zhabotinski (BZ) reaction and their use for the numerical Simulation under conditions of the closed. isothermal reactor are presented. Critical valuation of the models, based on comparative analysis of experimental and numerical results, is given. It is shown that BG model gives the best results.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Modeling influence of the malonic acid on oscillatory evolution of the Belousov Zhabotinsky reaction in closed reactor
VL  - 63
IS  - 5
SP  - 477
EP  - 487
DO  - 10.2298/HEMIND0905477B
ER  - 

@article{
author = "Blagojević, Slavica",
year = "2009",
abstract = "Several known models of the Belousov-Zhabotinski (BZ) reaction and their use for the numerical Simulation under conditions of the closed. isothermal reactor are presented. Critical valuation of the models, based on comparative analysis of experimental and numerical results, is given. It is shown that BG model gives the best results.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Modeling influence of the malonic acid on oscillatory evolution of the Belousov Zhabotinsky reaction in closed reactor",
volume = "63",
number = "5",
pages = "477-487",
doi = "10.2298/HEMIND0905477B"
}

Blagojević, S.. (2009). Modeling influence of the malonic acid on oscillatory evolution of the Belousov Zhabotinsky reaction in closed reactor. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 63(5), 477-487.
https://doi.org/10.2298/HEMIND0905477B

Blagojević S. Modeling influence of the malonic acid on oscillatory evolution of the Belousov Zhabotinsky reaction in closed reactor. in Hemijska industrija. 2009;63(5):477-487.
doi:10.2298/HEMIND0905477B .

Blagojević, Slavica, "Modeling influence of the malonic acid on oscillatory evolution of the Belousov Zhabotinsky reaction in closed reactor" in Hemijska industrija, 63, no. 5 (2009):477-487,
https://doi.org/10.2298/HEMIND0905477B . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Čupić, Željko
AU  - Pejić, Nataša
AU  - Kolar-Anić, Ljiljana
PY  - 2008
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1027
AB  - The influence of the initial malonic acid concentration [MA](0) (8.00 x 10(-3)  lt = [MA](0)  lt = 4.30 x 10(-2) mol dm(-3)) in the presence of bromate (6.20 x 10(-2) mol dm(-3)), bromide (1.50 x 10(-5) mol dm(-3)), sulfuric acid (1.00 mol dm(-3)) and cerium sulfate (2.50 x 10(-3) mol dm(-3)) on the dynamics and the kinetics of the Belousov-Zhabotinsky (BZ) reactions was examined under batch conditions at 30.0 degrees C. The kinetics of the BZ reaction was analyzed by the earlier proposed method convenient for the examinations of the oscillatory reactions. In the defined region of parameters where oscillograms with only large-amplitude relaxation oscillations appeared, the pseudo-first order of the overall malonic acid decomposition with a corresponding rate constant of 2.14 x 10(-2) min(-1) was established. The numerical results on the dynamics and kinetics of the BZ reaction, carried out by the known skeleton model including the Br2O species, were in good agreement with the experimental ones. The already found saddle node infinite period (SNIPER) bifurcation point in transition from a stable quasi-steady state to periodic orbits and vice versa is confirmed by both experimental and numerical investigations of the system under consideration. Namely, the large-amplitude relaxation oscillations with increasing periods between oscillations in approaching the bifurcation points at the beginning and the end of the oscillatory domain, together with excitability of the stable quasi-steady states in their vicinity are obtained.
PB  - Royal Soc Chemistry, Cambridge
T2  - Physical Chemistry Chemical Physics
T1  - Malonic acid concentration as a control parameter in the kinetic analysis of the Belousov-Zhabotinsky reaction under batch conditions
VL  - 10
IS  - 44
SP  - 6658
EP  - 6664
DO  - 10.1039/b804919j
ER  - 

@article{
author = "Blagojević, Slavica and Anić, Slobodan and Čupić, Željko and Pejić, Nataša and Kolar-Anić, Ljiljana",
year = "2008",
abstract = "The influence of the initial malonic acid concentration [MA](0) (8.00 x 10(-3)  lt = [MA](0)  lt = 4.30 x 10(-2) mol dm(-3)) in the presence of bromate (6.20 x 10(-2) mol dm(-3)), bromide (1.50 x 10(-5) mol dm(-3)), sulfuric acid (1.00 mol dm(-3)) and cerium sulfate (2.50 x 10(-3) mol dm(-3)) on the dynamics and the kinetics of the Belousov-Zhabotinsky (BZ) reactions was examined under batch conditions at 30.0 degrees C. The kinetics of the BZ reaction was analyzed by the earlier proposed method convenient for the examinations of the oscillatory reactions. In the defined region of parameters where oscillograms with only large-amplitude relaxation oscillations appeared, the pseudo-first order of the overall malonic acid decomposition with a corresponding rate constant of 2.14 x 10(-2) min(-1) was established. The numerical results on the dynamics and kinetics of the BZ reaction, carried out by the known skeleton model including the Br2O species, were in good agreement with the experimental ones. The already found saddle node infinite period (SNIPER) bifurcation point in transition from a stable quasi-steady state to periodic orbits and vice versa is confirmed by both experimental and numerical investigations of the system under consideration. Namely, the large-amplitude relaxation oscillations with increasing periods between oscillations in approaching the bifurcation points at the beginning and the end of the oscillatory domain, together with excitability of the stable quasi-steady states in their vicinity are obtained.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Physical Chemistry Chemical Physics",
title = "Malonic acid concentration as a control parameter in the kinetic analysis of the Belousov-Zhabotinsky reaction under batch conditions",
volume = "10",
number = "44",
pages = "6658-6664",
doi = "10.1039/b804919j"
}

Blagojević, S., Anić, S., Čupić, Ž., Pejić, N.,& Kolar-Anić, L.. (2008). Malonic acid concentration as a control parameter in the kinetic analysis of the Belousov-Zhabotinsky reaction under batch conditions. in Physical Chemistry Chemical Physics
Royal Soc Chemistry, Cambridge., 10(44), 6658-6664.
https://doi.org/10.1039/b804919j

Blagojević S, Anić S, Čupić Ž, Pejić N, Kolar-Anić L. Malonic acid concentration as a control parameter in the kinetic analysis of the Belousov-Zhabotinsky reaction under batch conditions. in Physical Chemistry Chemical Physics. 2008;10(44):6658-6664.
doi:10.1039/b804919j .

Blagojević, Slavica, Anić, Slobodan, Čupić, Željko, Pejić, Nataša, Kolar-Anić, Ljiljana, "Malonic acid concentration as a control parameter in the kinetic analysis of the Belousov-Zhabotinsky reaction under batch conditions" in Physical Chemistry Chemical Physics, 10, no. 44 (2008):6658-6664,
https://doi.org/10.1039/b804919j . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Vukojević, Vladana
AU  - Mijatović, Miroslav D.
AU  - Ćirić, Jasna S.
AU  - Marković, Zoran S.
AU  - Marković, Svetlana D.
AU  - Kolar-Anić, Ljiljana
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/942
AB  - A novel kinetic method for micro-quantitative determinations of morphine (MH) is proposed and validated. The method is based on the potentiometric monitoring of the concentration perturbations of the oscillatory reaction system being in a stable non-equilibrium stationary state close to the bifurcation point between stable and oscillatory state. The response of the Bray-Liebhafsky (BL) oscillatory reaction as a matrix system, to the perturbations by different concentrations of morphine, is followed by a Pt-electrode. The proposed method relies on the linear relationship between maximal potential shift, Delta E-m, and the logarithm of the added morphine amounts in the range of 0.004-0.18 mu mol. Under optimum conditions, the sensitivity of the proposed method (as the limit of detection) is 0.001 mu mol and the method is featured by good precision (R.S.D. = 1.6%) as well as the excellent sample throughput (45 samples h(-1)). In addition to standard solution analysis, this approach was successfully applied for quantitative determination of morphine in a typical pharmaceutical dosage form. Some aspects of the possible mechanism of morphine action on the BL oscillating chemical system are discussed in detail.
PB  - Elsevier Science BV, Amsterdam
T2  - Analytica Chimica Acta
T1  - Kinetic determination of morphine by means of Bray-Liebhafsky oscillatory reaction system using analyte pulse perturbation technique
VL  - 582
IS  - 2
SP  - 367
EP  - 374
DO  - 10.1016/j.aca.2006.09.026
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica and Anić, Slobodan and Vukojević, Vladana and Mijatović, Miroslav D. and Ćirić, Jasna S. and Marković, Zoran S. and Marković, Svetlana D. and Kolar-Anić, Ljiljana",
year = "2007",
abstract = "A novel kinetic method for micro-quantitative determinations of morphine (MH) is proposed and validated. The method is based on the potentiometric monitoring of the concentration perturbations of the oscillatory reaction system being in a stable non-equilibrium stationary state close to the bifurcation point between stable and oscillatory state. The response of the Bray-Liebhafsky (BL) oscillatory reaction as a matrix system, to the perturbations by different concentrations of morphine, is followed by a Pt-electrode. The proposed method relies on the linear relationship between maximal potential shift, Delta E-m, and the logarithm of the added morphine amounts in the range of 0.004-0.18 mu mol. Under optimum conditions, the sensitivity of the proposed method (as the limit of detection) is 0.001 mu mol and the method is featured by good precision (R.S.D. = 1.6%) as well as the excellent sample throughput (45 samples h(-1)). In addition to standard solution analysis, this approach was successfully applied for quantitative determination of morphine in a typical pharmaceutical dosage form. Some aspects of the possible mechanism of morphine action on the BL oscillating chemical system are discussed in detail.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Analytica Chimica Acta",
title = "Kinetic determination of morphine by means of Bray-Liebhafsky oscillatory reaction system using analyte pulse perturbation technique",
volume = "582",
number = "2",
pages = "367-374",
doi = "10.1016/j.aca.2006.09.026"
}

Pejić, N., Blagojević, S., Anić, S., Vukojević, V., Mijatović, M. D., Ćirić, J. S., Marković, Z. S., Marković, S. D.,& Kolar-Anić, L.. (2007). Kinetic determination of morphine by means of Bray-Liebhafsky oscillatory reaction system using analyte pulse perturbation technique. in Analytica Chimica Acta
Elsevier Science BV, Amsterdam., 582(2), 367-374.
https://doi.org/10.1016/j.aca.2006.09.026

Pejić N, Blagojević S, Anić S, Vukojević V, Mijatović MD, Ćirić JS, Marković ZS, Marković SD, Kolar-Anić L. Kinetic determination of morphine by means of Bray-Liebhafsky oscillatory reaction system using analyte pulse perturbation technique. in Analytica Chimica Acta. 2007;582(2):367-374.
doi:10.1016/j.aca.2006.09.026 .

Pejić, Nataša, Blagojević, Slavica, Anić, Slobodan, Vukojević, Vladana, Mijatović, Miroslav D., Ćirić, Jasna S., Marković, Zoran S., Marković, Svetlana D., Kolar-Anić, Ljiljana, "Kinetic determination of morphine by means of Bray-Liebhafsky oscillatory reaction system using analyte pulse perturbation technique" in Analytica Chimica Acta, 582, no. 2 (2007):367-374,
https://doi.org/10.1016/j.aca.2006.09.026 . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
AU  - Vukelić, Jana
AU  - Kolar-Anić, Ljiljana
AU  - Anić, Slobodan
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/895
AB  - A pulse perturbation technique was applied to the Bray-Liebhafsky (BL) oscillatory reaction system in a stable nonequilibrium stationary state close to the bifurcation point, to determine micro-quantitatively 6-O-acetylmorphine (6-O-AM). The proposed method, in optimized reaction conditions ([KIO3](0) = 5.9 x 10(-2) M, [H2SO4](0) = 5.5 x 10(-2) M, and [H2O2](0) = 2.0 x 10(-1) M, j(o) = 2.95 x 10(-2) min(-1), and T = 42.9 degrees C), relied on the linear relationship between maximal potential shift, Delta E-m, caused by perturbation, and the logarithm of the amount of 6-O-acetylmorphine. The method had a rather good sample throughput of 40 samples h(-1) with the sensitivity determined to be 0.9 mu g mL(-1) and the precision RSD = 1.8%. The proposed method was successfully applied to the quantitative determination of 6-O-AM in a real seized street drug sample. The obtained result agrees with those obtained by HPLC. There was no interference from structurally related and associated compounds, such as papaverin, noscapin, and heroin.
PB  - Chemical Soc Japan, Tokyo
T2  - Bulletin of the Chemical Society of Japan
T1  - Analyte pulse perturbation technique for the determination of 6-O-acetylmorphine in seized street drug samples
VL  - 80
IS  - 10
SP  - 1942
EP  - 1948
DO  - 10.1246/bcsj.80.1942
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica and Vukelić, Jana and Kolar-Anić, Ljiljana and Anić, Slobodan",
year = "2007",
abstract = "A pulse perturbation technique was applied to the Bray-Liebhafsky (BL) oscillatory reaction system in a stable nonequilibrium stationary state close to the bifurcation point, to determine micro-quantitatively 6-O-acetylmorphine (6-O-AM). The proposed method, in optimized reaction conditions ([KIO3](0) = 5.9 x 10(-2) M, [H2SO4](0) = 5.5 x 10(-2) M, and [H2O2](0) = 2.0 x 10(-1) M, j(o) = 2.95 x 10(-2) min(-1), and T = 42.9 degrees C), relied on the linear relationship between maximal potential shift, Delta E-m, caused by perturbation, and the logarithm of the amount of 6-O-acetylmorphine. The method had a rather good sample throughput of 40 samples h(-1) with the sensitivity determined to be 0.9 mu g mL(-1) and the precision RSD = 1.8%. The proposed method was successfully applied to the quantitative determination of 6-O-AM in a real seized street drug sample. The obtained result agrees with those obtained by HPLC. There was no interference from structurally related and associated compounds, such as papaverin, noscapin, and heroin.",
publisher = "Chemical Soc Japan, Tokyo",
journal = "Bulletin of the Chemical Society of Japan",
title = "Analyte pulse perturbation technique for the determination of 6-O-acetylmorphine in seized street drug samples",
volume = "80",
number = "10",
pages = "1942-1948",
doi = "10.1246/bcsj.80.1942"
}

Pejić, N., Blagojević, S., Vukelić, J., Kolar-Anić, L.,& Anić, S.. (2007). Analyte pulse perturbation technique for the determination of 6-O-acetylmorphine in seized street drug samples. in Bulletin of the Chemical Society of Japan
Chemical Soc Japan, Tokyo., 80(10), 1942-1948.
https://doi.org/10.1246/bcsj.80.1942

Pejić N, Blagojević S, Vukelić J, Kolar-Anić L, Anić S. Analyte pulse perturbation technique for the determination of 6-O-acetylmorphine in seized street drug samples. in Bulletin of the Chemical Society of Japan. 2007;80(10):1942-1948.
doi:10.1246/bcsj.80.1942 .

Pejić, Nataša, Blagojević, Slavica, Vukelić, Jana, Kolar-Anić, Ljiljana, Anić, Slobodan, "Analyte pulse perturbation technique for the determination of 6-O-acetylmorphine in seized street drug samples" in Bulletin of the Chemical Society of Japan, 80, no. 10 (2007):1942-1948,
https://doi.org/10.1246/bcsj.80.1942 . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/892
AB  - A simple and reliable method for the determination of ascorbic acid (AA) is proposed and validated. It is based on potentiometric monitoring of the concentration perturbations of an oscillatory reaction system in a stable nonequilibrium stationary state close to the bifurcation point. The response of the Bray-Liebhafsky (BL) oscillatory reaction as a matrix, to the perturbation by different concentrations of AA, is followed by a Pt electrode. The linear relationship between maximal potential shift and the logarithm of the amount of AA is obtained between 0.01 and 1.0 mu mol. The sensitivity of the proposed method (as the limit of detection) is 0.009 mu mol and the method has excellent sample throughput (30 samples per hour). The procedure was used for AA determination in pharmaceutical formulations and urine. The results are in agreement with those obtained using the official method. Some aspects of the possible mechanism of AA action on the BL oscillating chemical system are discussed.
PB  - Springer Heidelberg, Heidelberg
T2  - Analytical and Bioanalytical Chemistry
T1  - Determination of ascorbic acid in pharmaceutical dosage forms and urine by means of an oscillatory reaction system using the pulse perturbation technique
VL  - 389
IS  - 6
SP  - 2009
EP  - 2017
DO  - 10.1007/s00216-007-1585-4
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2007",
abstract = "A simple and reliable method for the determination of ascorbic acid (AA) is proposed and validated. It is based on potentiometric monitoring of the concentration perturbations of an oscillatory reaction system in a stable nonequilibrium stationary state close to the bifurcation point. The response of the Bray-Liebhafsky (BL) oscillatory reaction as a matrix, to the perturbation by different concentrations of AA, is followed by a Pt electrode. The linear relationship between maximal potential shift and the logarithm of the amount of AA is obtained between 0.01 and 1.0 mu mol. The sensitivity of the proposed method (as the limit of detection) is 0.009 mu mol and the method has excellent sample throughput (30 samples per hour). The procedure was used for AA determination in pharmaceutical formulations and urine. The results are in agreement with those obtained using the official method. Some aspects of the possible mechanism of AA action on the BL oscillating chemical system are discussed.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Analytical and Bioanalytical Chemistry",
title = "Determination of ascorbic acid in pharmaceutical dosage forms and urine by means of an oscillatory reaction system using the pulse perturbation technique",
volume = "389",
number = "6",
pages = "2009-2017",
doi = "10.1007/s00216-007-1585-4"
}

Pejić, N., Blagojević, S., Anić, S.,& Kolar-Anić, L.. (2007). Determination of ascorbic acid in pharmaceutical dosage forms and urine by means of an oscillatory reaction system using the pulse perturbation technique. in Analytical and Bioanalytical Chemistry
Springer Heidelberg, Heidelberg., 389(6), 2009-2017.
https://doi.org/10.1007/s00216-007-1585-4

Pejić N, Blagojević S, Anić S, Kolar-Anić L. Determination of ascorbic acid in pharmaceutical dosage forms and urine by means of an oscillatory reaction system using the pulse perturbation technique. in Analytical and Bioanalytical Chemistry. 2007;389(6):2009-2017.
doi:10.1007/s00216-007-1585-4 .

Pejić, Nataša, Blagojević, Slavica, Anić, Slobodan, Kolar-Anić, Ljiljana, "Determination of ascorbic acid in pharmaceutical dosage forms and urine by means of an oscillatory reaction system using the pulse perturbation technique" in Analytical and Bioanalytical Chemistry, 389, no. 6 (2007):2009-2017,
https://doi.org/10.1007/s00216-007-1585-4 . .

TY  - JOUR
AU  - Kolar-Anić, Ljiljana
AU  - Blagojević, Slavica
AU  - Pejić, Nataša
AU  - Begović, Nebojša
AU  - Blagojević, Stevan
AU  - Anić, Slobodan
PY  - 2006
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/888
AB  - Some new experimental evidence of complex irregular oscillations in the Belousov-Zhabotinsky reaction realized in a batch reactor is presented. The results were obtained under relatively low cerium and malonic acid concentrations. One-dimensional maps were used for general discussion, and particularly, for the influence of noise on the evolution of the oscillations.
AB  - Daju se novi eksperimentalni rezultati o kompleksnim neregularnim oscilacijama BŽ sistema ostvarenog u zatvorenom reaktoru, u uslovima relativno niske koncentracije cerijuma i malonske kiseline. Jednodimenzionalne mape su korišćene za generalnu diskusiju rezultata, a posebno za uticaj šuma na oscilatornu evoluciju.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system
T1  - Novozabeležene tranzijentne kompleksne oscilacije u zatvorenom belousov-žabotinski reakcionom sistemu sa dobrim mešanjem
VL  - 71
IS  - 6
SP  - 605
EP  - 612
DO  - 10.2298/JSC0606605K
ER  - 

@article{
author = "Kolar-Anić, Ljiljana and Blagojević, Slavica and Pejić, Nataša and Begović, Nebojša and Blagojević, Stevan and Anić, Slobodan",
year = "2006",
abstract = "Some new experimental evidence of complex irregular oscillations in the Belousov-Zhabotinsky reaction realized in a batch reactor is presented. The results were obtained under relatively low cerium and malonic acid concentrations. One-dimensional maps were used for general discussion, and particularly, for the influence of noise on the evolution of the oscillations., Daju se novi eksperimentalni rezultati o kompleksnim neregularnim oscilacijama BŽ sistema ostvarenog u zatvorenom reaktoru, u uslovima relativno niske koncentracije cerijuma i malonske kiseline. Jednodimenzionalne mape su korišćene za generalnu diskusiju rezultata, a posebno za uticaj šuma na oscilatornu evoluciju.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system, Novozabeležene tranzijentne kompleksne oscilacije u zatvorenom belousov-žabotinski reakcionom sistemu sa dobrim mešanjem",
volume = "71",
number = "6",
pages = "605-612",
doi = "10.2298/JSC0606605K"
}

Kolar-Anić, L., Blagojević, S., Pejić, N., Begović, N., Blagojević, S.,& Anić, S.. (2006). New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 71(6), 605-612.
https://doi.org/10.2298/JSC0606605K

Kolar-Anić L, Blagojević S, Pejić N, Begović N, Blagojević S, Anić S. New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system. in Journal of the Serbian Chemical Society. 2006;71(6):605-612.
doi:10.2298/JSC0606605K .

Kolar-Anić, Ljiljana, Blagojević, Slavica, Pejić, Nataša, Begović, Nebojša, Blagojević, Stevan, Anić, Slobodan, "New evidence of transient complex oscillations in a closed, well-stirred belousov-zhabotinsky system" in Journal of the Serbian Chemical Society, 71, no. 6 (2006):605-612,
https://doi.org/10.2298/JSC0606605K . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
AU  - Anić, Slobodan
AU  - Vukojević, Vladana
AU  - Kolar-Anić, Ljiljana
PY  - 2005
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/639
AB  - A simple and reliable kinetic method for the determination of hesperidin (Hesp) is developed. It is based on potentiometric monitoring of the concentration perturbations of the matrix reaction system which is in a stable non-equilibrium stationary state close to the bifurcation point. The Bray-Liebhafsky oscillatory reaction is used as the matrix system. The response of the matrix to perturbations by different concentrations of Hesp is followed by using a Pt electrode. A linear relationship between maximal potential shift and the logarithm of Hesp concentrations is obtained between 7.5 and 599.4 mu g mL(-1). The limit of detection is 0.65 mu g mL(-1). The described procedure has been successfully applied to the determination of Hesp from different sources (capsules, industrial and hand-squeezed orange juice, and white wine).
PB  - Springer Heidelberg, Heidelberg
T2  - Analytical and Bioanalytical Chemistry
T1  - Microquantitative determination of hesperidin by pulse perturbation of the oscillatory reaction system
VL  - 381
IS  - 3
SP  - 775
EP  - 780
DO  - 10.1007/s00216-004-2913-6
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica and Anić, Slobodan and Vukojević, Vladana and Kolar-Anić, Ljiljana",
year = "2005",
abstract = "A simple and reliable kinetic method for the determination of hesperidin (Hesp) is developed. It is based on potentiometric monitoring of the concentration perturbations of the matrix reaction system which is in a stable non-equilibrium stationary state close to the bifurcation point. The Bray-Liebhafsky oscillatory reaction is used as the matrix system. The response of the matrix to perturbations by different concentrations of Hesp is followed by using a Pt electrode. A linear relationship between maximal potential shift and the logarithm of Hesp concentrations is obtained between 7.5 and 599.4 mu g mL(-1). The limit of detection is 0.65 mu g mL(-1). The described procedure has been successfully applied to the determination of Hesp from different sources (capsules, industrial and hand-squeezed orange juice, and white wine).",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Analytical and Bioanalytical Chemistry",
title = "Microquantitative determination of hesperidin by pulse perturbation of the oscillatory reaction system",
volume = "381",
number = "3",
pages = "775-780",
doi = "10.1007/s00216-004-2913-6"
}

Pejić, N., Blagojević, S., Anić, S., Vukojević, V.,& Kolar-Anić, L.. (2005). Microquantitative determination of hesperidin by pulse perturbation of the oscillatory reaction system. in Analytical and Bioanalytical Chemistry
Springer Heidelberg, Heidelberg., 381(3), 775-780.
https://doi.org/10.1007/s00216-004-2913-6

Pejić N, Blagojević S, Anić S, Vukojević V, Kolar-Anić L. Microquantitative determination of hesperidin by pulse perturbation of the oscillatory reaction system. in Analytical and Bioanalytical Chemistry. 2005;381(3):775-780.
doi:10.1007/s00216-004-2913-6 .

Pejić, Nataša, Blagojević, Slavica, Anić, Slobodan, Vukojević, Vladana, Kolar-Anić, Ljiljana, "Microquantitative determination of hesperidin by pulse perturbation of the oscillatory reaction system" in Analytical and Bioanalytical Chemistry, 381, no. 3 (2005):775-780,
https://doi.org/10.1007/s00216-004-2913-6 . .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Aleksić, Mara
AU  - Malešev, Dušan
AU  - Radović, Zorica
PY  - 2003
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/453
AB  - The composition of the titanyl oksalat-morin complex was determined by spectrophotometric method of variations of equimolar solutions and by the mole ratios method. The investigation of the composition and the concentration stability constant of the complex were carried out in a 50% V/V ethanol. It was found that titanyl oxalate ion and morin form 1:2 complex. The concentration stability constant of the complex, logβ2 was calculated for the pH=6,0 (5.83), pH=7,0 (6.40) andpH=8,0 (7.35).
AB  - Sastav titanil oksalat-morin kompleksa određenje spektrofotometrijskom metodom varijacija ekvimolarnih rastvora i metodom molarnih odnosa. Ispitivanje sastava i određivanje koncentracionih konstanti stabilnosti ovog kompleksa vršeni su u 50% V/V etanolu. Nađeno je da se formira kompleks TiO(C2O4)22-: morin = 1:2. Određene su koncentracione konstante stabilnosti kompleksa: log β2 = 5,83 (pH = 6,0), log β2 =6,40 (pH = 7,0) i log β2 = 7,35 (pH =8,0).
PB  - Savez farmaceutskih udruženja Srbije, Beograd
T2  - Arhiv za farmaciju
T1  - Spectrophotometric investigation of titanyl oxalate-morin complex in 50% v/v ethanol
T1  - Spektrofotometrijsko ispitivanje kompleksa titanil oksalat-morin u 50% v/v etanolu
VL  - 53
IS  - 1-2
SP  - 17
EP  - 26
UR  - https://hdl.handle.net/21.15107/rcub_farfar_453
ER  - 

@article{
author = "Blagojević, Slavica and Aleksić, Mara and Malešev, Dušan and Radović, Zorica",
year = "2003",
abstract = "The composition of the titanyl oksalat-morin complex was determined by spectrophotometric method of variations of equimolar solutions and by the mole ratios method. The investigation of the composition and the concentration stability constant of the complex were carried out in a 50% V/V ethanol. It was found that titanyl oxalate ion and morin form 1:2 complex. The concentration stability constant of the complex, logβ2 was calculated for the pH=6,0 (5.83), pH=7,0 (6.40) andpH=8,0 (7.35)., Sastav titanil oksalat-morin kompleksa određenje spektrofotometrijskom metodom varijacija ekvimolarnih rastvora i metodom molarnih odnosa. Ispitivanje sastava i određivanje koncentracionih konstanti stabilnosti ovog kompleksa vršeni su u 50% V/V etanolu. Nađeno je da se formira kompleks TiO(C2O4)22-: morin = 1:2. Određene su koncentracione konstante stabilnosti kompleksa: log β2 = 5,83 (pH = 6,0), log β2 =6,40 (pH = 7,0) i log β2 = 7,35 (pH =8,0).",
publisher = "Savez farmaceutskih udruženja Srbije, Beograd",
journal = "Arhiv za farmaciju",
title = "Spectrophotometric investigation of titanyl oxalate-morin complex in 50% v/v ethanol, Spektrofotometrijsko ispitivanje kompleksa titanil oksalat-morin u 50% v/v etanolu",
volume = "53",
number = "1-2",
pages = "17-26",
url = "https://hdl.handle.net/21.15107/rcub_farfar_453"
}

Blagojević, S., Aleksić, M., Malešev, D.,& Radović, Z.. (2003). Spectrophotometric investigation of titanyl oxalate-morin complex in 50% v/v ethanol. in Arhiv za farmaciju
Savez farmaceutskih udruženja Srbije, Beograd., 53(1-2), 17-26.
https://hdl.handle.net/21.15107/rcub_farfar_453

Blagojević S, Aleksić M, Malešev D, Radović Z. Spectrophotometric investigation of titanyl oxalate-morin complex in 50% v/v ethanol. in Arhiv za farmaciju. 2003;53(1-2):17-26.
https://hdl.handle.net/21.15107/rcub_farfar_453 .

Blagojević, Slavica, Aleksić, Mara, Malešev, Dušan, Radović, Zorica, "Spectrophotometric investigation of titanyl oxalate-morin complex in 50% v/v ethanol" in Arhiv za farmaciju, 53, no. 1-2 (2003):17-26,
https://hdl.handle.net/21.15107/rcub_farfar_453 .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Blagojević, Slavica
PY  - 2003
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/472
AB  - Results obtained by kinetic method based on hesperidin interaction with Bray-Liebhafsky oscillatory reaction, as the matrix established in non-equilibrium stationary state in the vicinity of bifurcation point, are given. In these conditions, the matrix system is extremely sensitive on changes of parameter so that pulse perturbations performed by addition of micro amount of hesperidin were caused changes in system whish is followed potentiometricaly by Pt electrode. This kinetic procedure established on linear relationship between logarithm concentration of hesperidin and potential shift (defined as the difference in potential after the perturbation and potential of stationary state) that was obtained in range concentrations of hesperidin from 6.8×10-3 to 5.4×10-1 μg mL-1. Obtained limit of detection is 1.7×10-3 μg mL-1. Routine is successfully concerned for quantitative determination of hesperidin in real sample (capsules). The recovery determination of hesperidin from capsules was found to be 97.3 %. Thus, for the expected 109.8 mg Hesp, 107.4 mg were recovered by the applied method (RSD = 2.3%). Developed kinetic method is simple, sensitive and accurate.
AB  - Prikazani su rezultati analize dobijeni kinetičkom metodom zasnovanom na interakciji hesperidina i Bray-Liebhafsky oscilatorne reakcije kao matrice kada se ista nalazi u neravnotežnom stabilnom stacionarnom stanju u blizini bifurkacione tačke. U ovim uslovima matrični sistem ispoljava izuzetnu osetljivost na promene parametara tako da pulsne perturbacije izazvane dodatkom mikrokoličina hesperidina dovode do promena u sistemu koje mogu da se prate potenciometrijski korišćenjem Pt elektrode. Ovaj kinetički postupak zasniva se na linearnoj vezi između logaritma koncentracije hesperidina i promene potencijala (definisanog kao razlika u potencijalu nakon izvršene perturbacije i potencijala stacionarnog stanja) koja je dobijena za koncentracije hesperidina u opsegu 6,8×10-3- 5,4×10-1 μg mL-1. Dobijeni limit detekcije iznosi 1,7×10-3 μg mL-1. Postupak je uspešno primenjen za kvantitativno određivanje hesperidina u realnom uzorku (kapsule). Tačnost metode (data recovery vrednostima) iznosi 97,3 %. Tako, od očekivanog sadržaja hesperidina u kapsuli od 109,8 mg, nađeno je 107,4 mg (RSD = 2,3%). Razvijena kinetička metoda je jednostavna, osetljiva i pouzdana.
PB  - Institut bezbednosti, Beograd
T2  - Nauka, tehnika, bezbednost
T1  - Determination of sub-micrograms of hesperidin by method of perturbation of Bray-Liebhafsky oscillatory reaction realized in an open reactor
T1  - Određivanje sub-mikrograma hesperidina metodom perturbacije Bray -Liebhafsky oscilatorne reakcije realizovane u otvorenom reaktoru
VL  - 13
IS  - 2
SP  - 81
EP  - 88
UR  - https://hdl.handle.net/21.15107/rcub_farfar_472
ER  - 

@article{
author = "Pejić, Nataša and Blagojević, Slavica",
year = "2003",
abstract = "Results obtained by kinetic method based on hesperidin interaction with Bray-Liebhafsky oscillatory reaction, as the matrix established in non-equilibrium stationary state in the vicinity of bifurcation point, are given. In these conditions, the matrix system is extremely sensitive on changes of parameter so that pulse perturbations performed by addition of micro amount of hesperidin were caused changes in system whish is followed potentiometricaly by Pt electrode. This kinetic procedure established on linear relationship between logarithm concentration of hesperidin and potential shift (defined as the difference in potential after the perturbation and potential of stationary state) that was obtained in range concentrations of hesperidin from 6.8×10-3 to 5.4×10-1 μg mL-1. Obtained limit of detection is 1.7×10-3 μg mL-1. Routine is successfully concerned for quantitative determination of hesperidin in real sample (capsules). The recovery determination of hesperidin from capsules was found to be 97.3 %. Thus, for the expected 109.8 mg Hesp, 107.4 mg were recovered by the applied method (RSD = 2.3%). Developed kinetic method is simple, sensitive and accurate., Prikazani su rezultati analize dobijeni kinetičkom metodom zasnovanom na interakciji hesperidina i Bray-Liebhafsky oscilatorne reakcije kao matrice kada se ista nalazi u neravnotežnom stabilnom stacionarnom stanju u blizini bifurkacione tačke. U ovim uslovima matrični sistem ispoljava izuzetnu osetljivost na promene parametara tako da pulsne perturbacije izazvane dodatkom mikrokoličina hesperidina dovode do promena u sistemu koje mogu da se prate potenciometrijski korišćenjem Pt elektrode. Ovaj kinetički postupak zasniva se na linearnoj vezi između logaritma koncentracije hesperidina i promene potencijala (definisanog kao razlika u potencijalu nakon izvršene perturbacije i potencijala stacionarnog stanja) koja je dobijena za koncentracije hesperidina u opsegu 6,8×10-3- 5,4×10-1 μg mL-1. Dobijeni limit detekcije iznosi 1,7×10-3 μg mL-1. Postupak je uspešno primenjen za kvantitativno određivanje hesperidina u realnom uzorku (kapsule). Tačnost metode (data recovery vrednostima) iznosi 97,3 %. Tako, od očekivanog sadržaja hesperidina u kapsuli od 109,8 mg, nađeno je 107,4 mg (RSD = 2,3%). Razvijena kinetička metoda je jednostavna, osetljiva i pouzdana.",
publisher = "Institut bezbednosti, Beograd",
journal = "Nauka, tehnika, bezbednost",
title = "Determination of sub-micrograms of hesperidin by method of perturbation of Bray-Liebhafsky oscillatory reaction realized in an open reactor, Određivanje sub-mikrograma hesperidina metodom perturbacije Bray -Liebhafsky oscilatorne reakcije realizovane u otvorenom reaktoru",
volume = "13",
number = "2",
pages = "81-88",
url = "https://hdl.handle.net/21.15107/rcub_farfar_472"
}

Pejić, N.,& Blagojević, S.. (2003). Determination of sub-micrograms of hesperidin by method of perturbation of Bray-Liebhafsky oscillatory reaction realized in an open reactor. in Nauka, tehnika, bezbednost
Institut bezbednosti, Beograd., 13(2), 81-88.
https://hdl.handle.net/21.15107/rcub_farfar_472

Pejić N, Blagojević S. Determination of sub-micrograms of hesperidin by method of perturbation of Bray-Liebhafsky oscillatory reaction realized in an open reactor. in Nauka, tehnika, bezbednost. 2003;13(2):81-88.
https://hdl.handle.net/21.15107/rcub_farfar_472 .

Pejić, Nataša, Blagojević, Slavica, "Determination of sub-micrograms of hesperidin by method of perturbation of Bray-Liebhafsky oscillatory reaction realized in an open reactor" in Nauka, tehnika, bezbednost, 13, no. 2 (2003):81-88,
https://hdl.handle.net/21.15107/rcub_farfar_472 .

TY  - JOUR
AU  - Aleksić, Mara
AU  - Blagojević, Slavica
AU  - Malešev, Dušan
AU  - Radović, Zorica
PY  - 2000
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/258
AB  - It has been established, by the application of suitable spectrophotometric methods and pH-metric measurements, that titanyl oxalate anion and 3-hydroxyflavone (3HF) form a [TiO(C2O4)2(C15H9O3)2]4- complex. The investigation of the composition and the concentration stability constant of the complex were carried out in a 50 % aqueous ethanol solution at room temperature (20 °C), in the pH range from 1.9 to 9.0. The concentration stability constant of the complex, log β2, ranged from 16.65 at pH 5.0 to 13.96 at pH 7.0. The conditions for the spectrophotometric determination of 3HF by means of the complex formation were investigated in the concentration range from 2.5 x 10-5 to 3.0 x 10-4 mol dm-3 3HF.
AB  - Korišćenjem pogodnih spektrofotometrijskih i pH-metrijskih metoda utvrđeno je da titanil oksalat i 3-hidroksiflavon (3HF) grade [TiO(C2O4)2(C15H9O3)2]4- kompleks. Ispitivanje sastava i određivanje koncentracionih konstanti stabilnosti ovog kompleksa vršeno je u 50 % etanolnom rastvoru, na sobnoj temperaturi (20 °C), u oblasti pH od 1,9 do 9,0. Izračunate vrednosti koncentracione konstante stabilnosti kompleksa, log β2, su u intervalu od 16,65 pri pH 5,0 do 13,96 na pH 7,0. Određeni su i uslovi za spektrofotometrijsko određivanje 3HF korišćenjem nagrađenog kompleksa u koncentracionom intervalu od 2,5 x 10-5 do 3,0 x 10-4 mol dm-3.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - A spectrophotometric investigation of the complex between titanyl oxalate and 3-hydroxyflavone in water ethanolic mixtures
T1  - Spektrofotometrijsko ispitivanje kompleksa između titanil oksalata i 3-hidroksiflavona u vodeno-etanolnoj smeši
VL  - 65
IS  - 9
SP  - 631
EP  - 638
UR  - https://hdl.handle.net/21.15107/rcub_farfar_258
ER  - 

@article{
author = "Aleksić, Mara and Blagojević, Slavica and Malešev, Dušan and Radović, Zorica",
year = "2000",
abstract = "It has been established, by the application of suitable spectrophotometric methods and pH-metric measurements, that titanyl oxalate anion and 3-hydroxyflavone (3HF) form a [TiO(C2O4)2(C15H9O3)2]4- complex. The investigation of the composition and the concentration stability constant of the complex were carried out in a 50 % aqueous ethanol solution at room temperature (20 °C), in the pH range from 1.9 to 9.0. The concentration stability constant of the complex, log β2, ranged from 16.65 at pH 5.0 to 13.96 at pH 7.0. The conditions for the spectrophotometric determination of 3HF by means of the complex formation were investigated in the concentration range from 2.5 x 10-5 to 3.0 x 10-4 mol dm-3 3HF., Korišćenjem pogodnih spektrofotometrijskih i pH-metrijskih metoda utvrđeno je da titanil oksalat i 3-hidroksiflavon (3HF) grade [TiO(C2O4)2(C15H9O3)2]4- kompleks. Ispitivanje sastava i određivanje koncentracionih konstanti stabilnosti ovog kompleksa vršeno je u 50 % etanolnom rastvoru, na sobnoj temperaturi (20 °C), u oblasti pH od 1,9 do 9,0. Izračunate vrednosti koncentracione konstante stabilnosti kompleksa, log β2, su u intervalu od 16,65 pri pH 5,0 do 13,96 na pH 7,0. Određeni su i uslovi za spektrofotometrijsko određivanje 3HF korišćenjem nagrađenog kompleksa u koncentracionom intervalu od 2,5 x 10-5 do 3,0 x 10-4 mol dm-3.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "A spectrophotometric investigation of the complex between titanyl oxalate and 3-hydroxyflavone in water ethanolic mixtures, Spektrofotometrijsko ispitivanje kompleksa između titanil oksalata i 3-hidroksiflavona u vodeno-etanolnoj smeši",
volume = "65",
number = "9",
pages = "631-638",
url = "https://hdl.handle.net/21.15107/rcub_farfar_258"
}

Aleksić, M., Blagojević, S., Malešev, D.,& Radović, Z.. (2000). A spectrophotometric investigation of the complex between titanyl oxalate and 3-hydroxyflavone in water ethanolic mixtures. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 65(9), 631-638.
https://hdl.handle.net/21.15107/rcub_farfar_258

Aleksić M, Blagojević S, Malešev D, Radović Z. A spectrophotometric investigation of the complex between titanyl oxalate and 3-hydroxyflavone in water ethanolic mixtures. in Journal of the Serbian Chemical Society. 2000;65(9):631-638.
https://hdl.handle.net/21.15107/rcub_farfar_258 .

Aleksić, Mara, Blagojević, Slavica, Malešev, Dušan, Radović, Zorica, "A spectrophotometric investigation of the complex between titanyl oxalate and 3-hydroxyflavone in water ethanolic mixtures" in Journal of the Serbian Chemical Society, 65, no. 9 (2000):631-638,
https://hdl.handle.net/21.15107/rcub_farfar_258 .

TY  - JOUR
AU  - Blagojević, Slavica
AU  - Pejić, Nataša
AU  - Anić, Slobodan
AU  - Kolar-Anić, Ljiljana
PY  - 2000
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/261
AB  - The kinetics of the Belousov-Zhabotinsky (BZ) oscillatory reaction was analyzed. With this aim, the time evolution of a reaction mixture composed of malonic acid, bromate, sulfuric acid and cerium(III) was studied at 298 K. Pseudo-first order kinetics with respect to malonic acid as the species undergoing decomposition with a corresponding rate constant, k = 7.5x10-3 min-1, was found.
AB  - Sa ciljem da se analizira kinetika Belousov-Žabotinski oscilatorne reakcije, proučavana je vremenska evolucija reakcione smeše koja se sastoji od malonske kiseline, sumporne kiseline i cerijuma(III) na 298 K. Nađena je kinetika pseudo-prvog reda u odnosu na malonsku kiselinu kao vrstu koja podleže razlaganju i odgovarajuća konstanta brzine, k = 7.5x10-3 min-1.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Belousov-Zhabotinsky oscillatory reaction: Kinetics of malonic acid decomposition
T1  - Belousov-Žabotinski oscilatorna reakcija - kinetika razlaganja malonske kiseline
VL  - 65
IS  - 10
SP  - 709
EP  - 713
UR  - https://hdl.handle.net/21.15107/rcub_farfar_261
ER  - 

@article{
author = "Blagojević, Slavica and Pejić, Nataša and Anić, Slobodan and Kolar-Anić, Ljiljana",
year = "2000",
abstract = "The kinetics of the Belousov-Zhabotinsky (BZ) oscillatory reaction was analyzed. With this aim, the time evolution of a reaction mixture composed of malonic acid, bromate, sulfuric acid and cerium(III) was studied at 298 K. Pseudo-first order kinetics with respect to malonic acid as the species undergoing decomposition with a corresponding rate constant, k = 7.5x10-3 min-1, was found., Sa ciljem da se analizira kinetika Belousov-Žabotinski oscilatorne reakcije, proučavana je vremenska evolucija reakcione smeše koja se sastoji od malonske kiseline, sumporne kiseline i cerijuma(III) na 298 K. Nađena je kinetika pseudo-prvog reda u odnosu na malonsku kiselinu kao vrstu koja podleže razlaganju i odgovarajuća konstanta brzine, k = 7.5x10-3 min-1.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Belousov-Zhabotinsky oscillatory reaction: Kinetics of malonic acid decomposition, Belousov-Žabotinski oscilatorna reakcija - kinetika razlaganja malonske kiseline",
volume = "65",
number = "10",
pages = "709-713",
url = "https://hdl.handle.net/21.15107/rcub_farfar_261"
}

Blagojević, S., Pejić, N., Anić, S.,& Kolar-Anić, L.. (2000). Belousov-Zhabotinsky oscillatory reaction: Kinetics of malonic acid decomposition. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 65(10), 709-713.
https://hdl.handle.net/21.15107/rcub_farfar_261

Blagojević S, Pejić N, Anić S, Kolar-Anić L. Belousov-Zhabotinsky oscillatory reaction: Kinetics of malonic acid decomposition. in Journal of the Serbian Chemical Society. 2000;65(10):709-713.
https://hdl.handle.net/21.15107/rcub_farfar_261 .

Blagojević, Slavica, Pejić, Nataša, Anić, Slobodan, Kolar-Anić, Ljiljana, "Belousov-Zhabotinsky oscillatory reaction: Kinetics of malonic acid decomposition" in Journal of the Serbian Chemical Society, 65, no. 10 (2000):709-713,
https://hdl.handle.net/21.15107/rcub_farfar_261 .

TY  - JOUR
AU  - Kuntić, Vesna
AU  - Blagojević, Slavica
AU  - Malešev, Dušan
AU  - Radović, Zorica
PY  - 1999
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/231
PB  - Govi-Verlag Pharmazeutischer Verlag GmbH
T2  - Pharmazie
T1  - Spectrophotometric investigation of the cu(ll)-hesperidin complex
VL  - 54
IS  - 7
SP  - 548
UR  - https://hdl.handle.net/21.15107/rcub_farfar_231
ER  - 

@article{
author = "Kuntić, Vesna and Blagojević, Slavica and Malešev, Dušan and Radović, Zorica",
year = "1999",
publisher = "Govi-Verlag Pharmazeutischer Verlag GmbH",
journal = "Pharmazie",
title = "Spectrophotometric investigation of the cu(ll)-hesperidin complex",
volume = "54",
number = "7",
pages = "548",
url = "https://hdl.handle.net/21.15107/rcub_farfar_231"
}

Kuntić, V., Blagojević, S., Malešev, D.,& Radović, Z.. (1999). Spectrophotometric investigation of the cu(ll)-hesperidin complex. in Pharmazie
Govi-Verlag Pharmazeutischer Verlag GmbH., 54(7), 548.
https://hdl.handle.net/21.15107/rcub_farfar_231

Kuntić V, Blagojević S, Malešev D, Radović Z. Spectrophotometric investigation of the cu(ll)-hesperidin complex. in Pharmazie. 1999;54(7):548.
https://hdl.handle.net/21.15107/rcub_farfar_231 .

Kuntić, Vesna, Blagojević, Slavica, Malešev, Dušan, Radović, Zorica, "Spectrophotometric investigation of the cu(ll)-hesperidin complex" in Pharmazie, 54, no. 7 (1999):548,
https://hdl.handle.net/21.15107/rcub_farfar_231 .