A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid using Carbon Paste/Copper Schiff Base Composite Electrode
Samo za registrovane korisnike
2023
Autori
Kulizić, Mihajlo N.Stanković, Milan
Rašić, Marija
Mijatović, Aleksandar
Baošić, Rada
Lolić, Aleksandar
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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 dieta...ry supplements, after simple preparation.
Ključne reči:
amperometry / ascorbic acid / dietary supplements / flow injection analysis / modified carbon paste electrodeIzvor:
2023, 8, 48, e202304631-Izdavač:
- Wiley
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200126 (Univerzitet u Beogradu, Rudarsko-geološki fakultet) (RS-MESTD-inst-2020-200126)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200168 (Univerzitet u Beogradu, Hemijski fakultet) (RS-MESTD-inst-2020-200168)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200288 (Inovacioni centar Hemijskog fakulteta u Beogradu doo) (RS-MESTD-inst-2020-200288)
Kolekcije
Institucija/grupa
Hemijski fakultet / Faculty of ChemistryTY - JOUR AU - Kulizić, Mihajlo N. AU - Stanković, Milan AU - Rašić, Marija AU - Mijatović, Aleksandar AU - Baošić, Rada AU - Lolić, Aleksandar PY - 2023 UR - http://cherry.chem.bg.ac.rs/handle/123456789/6431 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 - Wiley T1 - A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid using Carbon Paste/Copper Schiff Base Composite Electrode VL - 8 IS - 48 SP - e202304631 DO - 10.1002/slct.202304631 ER -
@article{ author = "Kulizić, Mihajlo N. 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 = "Wiley", title = "A Simple Flow Injection System for Amperometric Detection of Ascorbic Acid using Carbon Paste/Copper Schiff Base Composite Electrode", volume = "8", number = "48", pages = "e202304631", doi = "10.1002/slct.202304631" }
Kulizić, M. N., 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. Wiley., 8(48), e202304631. https://doi.org/10.1002/slct.202304631
Kulizić MN, 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. 2023;8(48):e202304631. doi:10.1002/slct.202304631 .
Kulizić, Mihajlo N., 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", 8, no. 48 (2023):e202304631, https://doi.org/10.1002/slct.202304631 . .