Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
Apstrakt
A carbon paste electrode bulk was modified with MnO2 and investigated for use as an electrochemical sensor for riboflavin (vitamin B-2) using differential pulse voltammetry (DPV). Riboflavin displays a well expressed oxidation peak at -0.15 V (versus Ag/AgCl) in solutions with a pH value of 2. Effects of pH value, pulse amplitude and pulse time were optimized by employing DPV. The signals obtained are linearly related to the concentrations of riboflavin in the range from 0.02 to 9 mu M. Other features include a 15 nM detection limit, and good reproducibility (+/- 3 %) and repeatability (+/- 2 %). Interferences by common compounds were tested, and the method was successfully applied to the determination of riboflavin in pharmaceutical formulations where is gave recoveries in the range from 95 to 97 %.
Ključne reči:
Differential pulse voltammetry / Cyclic voltammetry / Vitamin B-2 / ElectrooxidationIzvor:
Microchimica Acta, 2016, 183, 5, 1619-1624Izdavač:
- Springer Wien, Wien
Finansiranje / projekti:
- Primena unapređenih oksidacionih procesa i nanostrukturisanih oksidnih materijala za uklanjanje zagađivača iz životne sredine, razvoj i optimizacija instrumentalnih tehnika za praćenje efikasnosti (RS-MESTD-Basic Research (BR or ON)-172030)
- Centre for International Cooperation Mobility (ICM)
- ADA
- Austrian Agency for International Cooperation in Education and Research (OeAD-GmbH)
DOI: 10.1007/s00604-016-1789-4
ISSN: 0026-3672
WoS: 000374980800010
Scopus: 2-s2.0-84959358149
Kolekcije
Institucija/grupa
Inovacioni centar / Innovation CentreTY - JOUR AU - Mehmeti, Eda AU - Stanković, Dalibor AU - Chaiyo, Sudkate AU - Šovrc, Ľubomír AU - Kalcher, Kurt PY - 2016 UR - https://cherry.chem.bg.ac.rs/handle/123456789/1926 AB - A carbon paste electrode bulk was modified with MnO2 and investigated for use as an electrochemical sensor for riboflavin (vitamin B-2) using differential pulse voltammetry (DPV). Riboflavin displays a well expressed oxidation peak at -0.15 V (versus Ag/AgCl) in solutions with a pH value of 2. Effects of pH value, pulse amplitude and pulse time were optimized by employing DPV. The signals obtained are linearly related to the concentrations of riboflavin in the range from 0.02 to 9 mu M. Other features include a 15 nM detection limit, and good reproducibility (+/- 3 %) and repeatability (+/- 2 %). Interferences by common compounds were tested, and the method was successfully applied to the determination of riboflavin in pharmaceutical formulations where is gave recoveries in the range from 95 to 97 %. PB - Springer Wien, Wien T2 - Microchimica Acta T1 - Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin VL - 183 IS - 5 SP - 1619 EP - 1624 DO - 10.1007/s00604-016-1789-4 ER -
@article{ author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Šovrc, Ľubomír and Kalcher, Kurt", year = "2016", abstract = "A carbon paste electrode bulk was modified with MnO2 and investigated for use as an electrochemical sensor for riboflavin (vitamin B-2) using differential pulse voltammetry (DPV). Riboflavin displays a well expressed oxidation peak at -0.15 V (versus Ag/AgCl) in solutions with a pH value of 2. Effects of pH value, pulse amplitude and pulse time were optimized by employing DPV. The signals obtained are linearly related to the concentrations of riboflavin in the range from 0.02 to 9 mu M. Other features include a 15 nM detection limit, and good reproducibility (+/- 3 %) and repeatability (+/- 2 %). Interferences by common compounds were tested, and the method was successfully applied to the determination of riboflavin in pharmaceutical formulations where is gave recoveries in the range from 95 to 97 %.", publisher = "Springer Wien, Wien", journal = "Microchimica Acta", title = "Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin", volume = "183", number = "5", pages = "1619-1624", doi = "10.1007/s00604-016-1789-4" }
Mehmeti, E., Stanković, D., Chaiyo, S., Šovrc, Ľ.,& Kalcher, K.. (2016). Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin. in Microchimica Acta Springer Wien, Wien., 183(5), 1619-1624. https://doi.org/10.1007/s00604-016-1789-4
Mehmeti E, Stanković D, Chaiyo S, Šovrc Ľ, Kalcher K. Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin. in Microchimica Acta. 2016;183(5):1619-1624. doi:10.1007/s00604-016-1789-4 .
Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Šovrc, Ľubomír, Kalcher, Kurt, "Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin" in Microchimica Acta, 183, no. 5 (2016):1619-1624, https://doi.org/10.1007/s00604-016-1789-4 . .