TY  - JOUR
AU  - Kulizić, Mihajlo
AU  - Stanković, Milan
AU  - Rašić, Marija
AU  - Mijatović, Aleksandar
AU  - Baošić, Rada
AU  - Lolić, Aleksandar
PY  - 2023
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/5406
AB  - In this paper, a simple, sensitive, and precise flow injection system was optimized and applied to ascorbic acid determination with a carbon paste electrode modified with the Schiff base copper complex. The modified sensor showed increased sensitivity toward ascorbic acid oxidation with a decrease of oxidation potential by 200 mV. Under optimized flow parameters, working potential, gasket thickness, sample and reaction coil volumes, and flow rate, the developed flow system gave a linear response from 5 to 75 μmol/L of ascorbic acid. The calculated limit of detection was 4.5 μmol/L, calculated as 3σ/s which corresponds to the absolute value of 40 ng for the 50 μL sample coil. The precision for six consecutive injections of 5 and 75 μmol/L ascorbic acid solutions was determined as a relative standard deviation of 5.8 % and 1.5 %, respectively. The flow injection system enabled up to 120 analyses per hour. An optimized flow system was applied to the determination of ascorbic acid in dietary supplements, after simple preparation.
PB  - John Wiley and Sons Inc
T2  - ChemistrySelect
T1  - A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid Using Carbon Paste/Copper Schiff Base Composite Electrode
VL  - 8
IS  - 48
DO  - 10.1002/slct.202304631
ER  - 

@article{
author = "Kulizić, Mihajlo and Stanković, Milan and Rašić, Marija and Mijatović, Aleksandar and Baošić, Rada and Lolić, Aleksandar",
year = "2023",
abstract = "In this paper, a simple, sensitive, and precise flow injection system was optimized and applied to ascorbic acid determination with a carbon paste electrode modified with the Schiff base copper complex. The modified sensor showed increased sensitivity toward ascorbic acid oxidation with a decrease of oxidation potential by 200 mV. Under optimized flow parameters, working potential, gasket thickness, sample and reaction coil volumes, and flow rate, the developed flow system gave a linear response from 5 to 75 μmol/L of ascorbic acid. The calculated limit of detection was 4.5 μmol/L, calculated as 3σ/s which corresponds to the absolute value of 40 ng for the 50 μL sample coil. The precision for six consecutive injections of 5 and 75 μmol/L ascorbic acid solutions was determined as a relative standard deviation of 5.8 % and 1.5 %, respectively. The flow injection system enabled up to 120 analyses per hour. An optimized flow system was applied to the determination of ascorbic acid in dietary supplements, after simple preparation.",
publisher = "John Wiley and Sons Inc",
journal = "ChemistrySelect",
title = "A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid Using Carbon Paste/Copper Schiff Base Composite Electrode",
volume = "8",
number = "48",
doi = "10.1002/slct.202304631"
}

Kulizić, M., Stanković, M., Rašić, M., Mijatović, A., Baošić, R.,& Lolić, A.. (2023). A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid Using Carbon Paste/Copper Schiff Base Composite Electrode. in ChemistrySelect
John Wiley and Sons Inc., 8(48).
https://doi.org/10.1002/slct.202304631

Kulizić M, Stanković M, Rašić M, Mijatović A, Baošić R, Lolić A. A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid Using Carbon Paste/Copper Schiff Base Composite Electrode. in ChemistrySelect. 2023;8(48).
doi:10.1002/slct.202304631 .

Kulizić, Mihajlo, Stanković, Milan, Rašić, Marija, Mijatović, Aleksandar, Baošić, Rada, Lolić, Aleksandar, "A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid Using Carbon Paste/Copper Schiff Base Composite Electrode" in ChemistrySelect, 8, no. 48 (2023),
https://doi.org/10.1002/slct.202304631 . .

TY  - JOUR
AU  - Đogo-Mračević, Svetlana
AU  - Laketić, Tatjana
AU  - Stanković, Milan
AU  - Lolić, Aleksandar
PY  - 2023
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/4983
AB  - The aim of this research was to determine the content of arsenic (As), cadmium (Cd), lead (Pb), and nickel (Ni) in selected lipsticks and face foundations of different price categories and the health risk assessment associated with these toxic elements via dermal and oral exposure. The samples (10 lipstick and 10 face foundations) were purchased from local markets in Belgrade, Serbia. The samples were prepared by acid digestion and analyzed by atomic absorption spectrometry (flame atomization for Cd, Pb, and Ni and electrothermal atomization for As). Arsenic was found in 50% of lipstick samples and in only two face foundation samples with the highest concentration of 0.28 mg/kg in the lipstick sample. Lead concentration was in the range of 1.15 to 5.12 mg/kg in ten samples. Nickel was found in five samples out of 20, with the highest concentration of 4.20 mg/kg. Cadmium was found in only one face foundation sample in the cheaper price range (1.11 mg/kg). The obtained results indicate that concentrations of As, Pb, Cd, and Ni were within the permissible limits according to Serbian legislation. Health risk associated with these elements was assessed as non-carcinogenic and carcinogenic risk. Obtained hazard quotients (HQs) and hazard indexes (HIs) were below 1, indicating the absence of significant non-carcinogenic health risk due to exposure to these toxic elements (TEs). The carcinogenic risk results show that investigated cosmetic products can be considered low-risky due to the possibility of causing malignant disease.
PB  - Springer Nature
T2  - Environmental Monitoring and Assessment
T1  - Toxic element determination in selected cosmetic products: health risk assessment
VL  - 195
IS  - 9
DO  - 10.1007/s10661-023-11664-1
ER  - 

@article{
author = "Đogo-Mračević, Svetlana and Laketić, Tatjana and Stanković, Milan and Lolić, Aleksandar",
year = "2023",
abstract = "The aim of this research was to determine the content of arsenic (As), cadmium (Cd), lead (Pb), and nickel (Ni) in selected lipsticks and face foundations of different price categories and the health risk assessment associated with these toxic elements via dermal and oral exposure. The samples (10 lipstick and 10 face foundations) were purchased from local markets in Belgrade, Serbia. The samples were prepared by acid digestion and analyzed by atomic absorption spectrometry (flame atomization for Cd, Pb, and Ni and electrothermal atomization for As). Arsenic was found in 50% of lipstick samples and in only two face foundation samples with the highest concentration of 0.28 mg/kg in the lipstick sample. Lead concentration was in the range of 1.15 to 5.12 mg/kg in ten samples. Nickel was found in five samples out of 20, with the highest concentration of 4.20 mg/kg. Cadmium was found in only one face foundation sample in the cheaper price range (1.11 mg/kg). The obtained results indicate that concentrations of As, Pb, Cd, and Ni were within the permissible limits according to Serbian legislation. Health risk associated with these elements was assessed as non-carcinogenic and carcinogenic risk. Obtained hazard quotients (HQs) and hazard indexes (HIs) were below 1, indicating the absence of significant non-carcinogenic health risk due to exposure to these toxic elements (TEs). The carcinogenic risk results show that investigated cosmetic products can be considered low-risky due to the possibility of causing malignant disease.",
publisher = "Springer Nature",
journal = "Environmental Monitoring and Assessment",
title = "Toxic element determination in selected cosmetic products: health risk assessment",
volume = "195",
number = "9",
doi = "10.1007/s10661-023-11664-1"
}

Đogo-Mračević, S., Laketić, T., Stanković, M.,& Lolić, A.. (2023). Toxic element determination in selected cosmetic products: health risk assessment. in Environmental Monitoring and Assessment
Springer Nature., 195(9).
https://doi.org/10.1007/s10661-023-11664-1

Đogo-Mračević S, Laketić T, Stanković M, Lolić A. Toxic element determination in selected cosmetic products: health risk assessment. in Environmental Monitoring and Assessment. 2023;195(9).
doi:10.1007/s10661-023-11664-1 .

Đogo-Mračević, Svetlana, Laketić, Tatjana, Stanković, Milan, Lolić, Aleksandar, "Toxic element determination in selected cosmetic products: health risk assessment" in Environmental Monitoring and Assessment, 195, no. 9 (2023),
https://doi.org/10.1007/s10661-023-11664-1 . .