TY  - JOUR
AU  - Goronja, Jelena
AU  - Pejić, Nataša
AU  - Janošević-Ležaić, Aleksandra
AU  - Stanisavljev, Dragomir
AU  - Malenović, Anđelija
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2653
AB  - An undergraduate electrical conductivity measurement experiment in a physical chemistry lab and basic fitting procedures are presented that allow a characterization of micellar system of hexadecyttrirnethylammonium bromide (cetyltrimethylammonium bromide, CTAB) in binary mixture of water and acetonitrile (ACN) as a cosolvent (10%, v/v) at 30.0 degrees C. Conductivity-concentration data were processed by inbuilt function of ORIGIN software to attain the values of critical micelle concentration by method of integration. Acquiring the data-fitting skills that are developed through the addition of a computational tool to a conventional electrical conductometry experiment has a general significance for its applications to more complex upper-level experiments with the aim to process data and perform fast calculations and graphics.
PB  - Amer Chemical Soc, Washington
T2  - Journal of Chemical Education
T1  - Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant
VL  - 93
IS  - 7
SP  - 1277
EP  - 1281
DO  - 10.1021/acs.jchemed.5b00913
ER  - 

@article{
author = "Goronja, Jelena and Pejić, Nataša and Janošević-Ležaić, Aleksandra and Stanisavljev, Dragomir and Malenović, Anđelija",
year = "2016",
abstract = "An undergraduate electrical conductivity measurement experiment in a physical chemistry lab and basic fitting procedures are presented that allow a characterization of micellar system of hexadecyttrirnethylammonium bromide (cetyltrimethylammonium bromide, CTAB) in binary mixture of water and acetonitrile (ACN) as a cosolvent (10%, v/v) at 30.0 degrees C. Conductivity-concentration data were processed by inbuilt function of ORIGIN software to attain the values of critical micelle concentration by method of integration. Acquiring the data-fitting skills that are developed through the addition of a computational tool to a conventional electrical conductometry experiment has a general significance for its applications to more complex upper-level experiments with the aim to process data and perform fast calculations and graphics.",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Chemical Education",
title = "Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant",
volume = "93",
number = "7",
pages = "1277-1281",
doi = "10.1021/acs.jchemed.5b00913"
}

Goronja, J., Pejić, N., Janošević-Ležaić, A., Stanisavljev, D.,& Malenović, A.. (2016). Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant. in Journal of Chemical Education
Amer Chemical Soc, Washington., 93(7), 1277-1281.
https://doi.org/10.1021/acs.jchemed.5b00913

Goronja J, Pejić N, Janošević-Ležaić A, Stanisavljev D, Malenović A. Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant. in Journal of Chemical Education. 2016;93(7):1277-1281.
doi:10.1021/acs.jchemed.5b00913 .

Goronja, Jelena, Pejić, Nataša, Janošević-Ležaić, Aleksandra, Stanisavljev, Dragomir, Malenović, Anđelija, "Using a Combination of Experimental and Mathematical Method To Explore Critical Micelle Concentration of a Cationic Surfactant" in Journal of Chemical Education, 93, no. 7 (2016):1277-1281,
https://doi.org/10.1021/acs.jchemed.5b00913 . .

TY  - JOUR
AU  - Goronja, Jelena M.
AU  - Janošević-Ležaić, Aleksandra
AU  - Dimitrijević, Biljana M.
AU  - Malenović, Anđelija
AU  - Stanisavljev, Dragomir
AU  - Pejić, Nataša
PY  - 2016
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2643
AB  - Conductivity of two micellar systems was measured in order to determine critical micelle concentration (CMC) of cetyltrimethylammonium bromide (CTAB). Those systems were: CTAB in water and CTAB in binary mixture acetonitrile (ACN)-water. Conductivity (kappa)- concentration
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Determination of critical micelle concentration of cetyltrimethyl-ammonium bromide: Different procedures for analysis of experimental data
VL  - 70
IS  - 4
SP  - 485
EP  - 492
DO  - 10.2298/HEMIND150622055G
ER  - 

@article{
author = "Goronja, Jelena M. and Janošević-Ležaić, Aleksandra and Dimitrijević, Biljana M. and Malenović, Anđelija and Stanisavljev, Dragomir and Pejić, Nataša",
year = "2016",
abstract = "Conductivity of two micellar systems was measured in order to determine critical micelle concentration (CMC) of cetyltrimethylammonium bromide (CTAB). Those systems were: CTAB in water and CTAB in binary mixture acetonitrile (ACN)-water. Conductivity (kappa)- concentration",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Determination of critical micelle concentration of cetyltrimethyl-ammonium bromide: Different procedures for analysis of experimental data",
volume = "70",
number = "4",
pages = "485-492",
doi = "10.2298/HEMIND150622055G"
}

Goronja, J. M., Janošević-Ležaić, A., Dimitrijević, B. M., Malenović, A., Stanisavljev, D.,& Pejić, N.. (2016). Determination of critical micelle concentration of cetyltrimethyl-ammonium bromide: Different procedures for analysis of experimental data. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 70(4), 485-492.
https://doi.org/10.2298/HEMIND150622055G

Goronja JM, Janošević-Ležaić A, Dimitrijević BM, Malenović A, Stanisavljev D, Pejić N. Determination of critical micelle concentration of cetyltrimethyl-ammonium bromide: Different procedures for analysis of experimental data. in Hemijska industrija. 2016;70(4):485-492.
doi:10.2298/HEMIND150622055G .

Goronja, Jelena M., Janošević-Ležaić, Aleksandra, Dimitrijević, Biljana M., Malenović, Anđelija, Stanisavljev, Dragomir, Pejić, Nataša, "Determination of critical micelle concentration of cetyltrimethyl-ammonium bromide: Different procedures for analysis of experimental data" in Hemijska industrija, 70, no. 4 (2016):485-492,
https://doi.org/10.2298/HEMIND150622055G . .

TY  - JOUR
AU  - Pejić, Nataša
AU  - Kolar-Anić, Ljiljana
AU  - Anić, Slobodan
AU  - Stanisavljev, Dragomir
PY  - 2006
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/861
AB  - A new procedure for kinetic determination of paracetamol in pharmaceuticals is proposed. The method is based on potentiometric monitoring of the concentration perturbations of the matrix reaction system being in a stable non-equilibrium stationary state close to the bifurcation point. In the case considered as the matrix system, the Bray-Liebhafsky oscillatory reaction is used. The response of the matrix system to the perturbations by different concentrations of paracetamol is followed by a Pt-electrode. Proposed method relies on the linear relationship between maximal potential shift, Delta E-m, and the logarithm of added paracetamol amounts. It is obtained in optimized experimental conditions for variable amounts of paracetamol in the range 0.0085 and 1.5 mu mol. The sensitivity and precision of proposed method were quite good (0.0027 mu mol as the limit of detection and 2.4% as R.S.D.). Some aspects of possible chemical interactions between paracetamol and matrix are discussed. Applicability of the proposed method to the direct determination of paracetamol in pharmaceutical formulations was demonstrated.
PB  - Elsevier Science BV, Amsterdam
T2  - Journal of Pharmaceutical and Biomedical Analysis
T1  - Determination of paracetamol in pure and pharmaceutical dosage forms by pulse perturbation technique
VL  - 41
IS  - 2
SP  - 610
EP  - 615
DO  - 10.1016/j.jpba.2005.11.043
ER  - 

@article{
author = "Pejić, Nataša and Kolar-Anić, Ljiljana and Anić, Slobodan and Stanisavljev, Dragomir",
year = "2006",
abstract = "A new procedure for kinetic determination of paracetamol in pharmaceuticals is proposed. The method is based on potentiometric monitoring of the concentration perturbations of the matrix reaction system being in a stable non-equilibrium stationary state close to the bifurcation point. In the case considered as the matrix system, the Bray-Liebhafsky oscillatory reaction is used. The response of the matrix system to the perturbations by different concentrations of paracetamol is followed by a Pt-electrode. Proposed method relies on the linear relationship between maximal potential shift, Delta E-m, and the logarithm of added paracetamol amounts. It is obtained in optimized experimental conditions for variable amounts of paracetamol in the range 0.0085 and 1.5 mu mol. The sensitivity and precision of proposed method were quite good (0.0027 mu mol as the limit of detection and 2.4% as R.S.D.). Some aspects of possible chemical interactions between paracetamol and matrix are discussed. Applicability of the proposed method to the direct determination of paracetamol in pharmaceutical formulations was demonstrated.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Journal of Pharmaceutical and Biomedical Analysis",
title = "Determination of paracetamol in pure and pharmaceutical dosage forms by pulse perturbation technique",
volume = "41",
number = "2",
pages = "610-615",
doi = "10.1016/j.jpba.2005.11.043"
}

Pejić, N., Kolar-Anić, L., Anić, S.,& Stanisavljev, D.. (2006). Determination of paracetamol in pure and pharmaceutical dosage forms by pulse perturbation technique. in Journal of Pharmaceutical and Biomedical Analysis
Elsevier Science BV, Amsterdam., 41(2), 610-615.
https://doi.org/10.1016/j.jpba.2005.11.043

Pejić N, Kolar-Anić L, Anić S, Stanisavljev D. Determination of paracetamol in pure and pharmaceutical dosage forms by pulse perturbation technique. in Journal of Pharmaceutical and Biomedical Analysis. 2006;41(2):610-615.
doi:10.1016/j.jpba.2005.11.043 .

Pejić, Nataša, Kolar-Anić, Ljiljana, Anić, Slobodan, Stanisavljev, Dragomir, "Determination of paracetamol in pure and pharmaceutical dosage forms by pulse perturbation technique" in Journal of Pharmaceutical and Biomedical Analysis, 41, no. 2 (2006):610-615,
https://doi.org/10.1016/j.jpba.2005.11.043 . .