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 . .