Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin

A carbon paste electrode bulk was modified with MnO(2) 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. Ef...

Descripción completa

Detalles Bibliográficos
Autores principales: Mehmeti, Eda, Stanković, Dalibor M., Chaiyo, Sudkate, Švorc, Ľubomir, Kalcher, Kurt
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Vienna 2016
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846707/
https://www.ncbi.nlm.nih.gov/pubmed/27217592
http://dx.doi.org/10.1007/s00604-016-1789-4
_version_ 1782429085135273984
author Mehmeti, Eda
Stanković, Dalibor M.
Chaiyo, Sudkate
Švorc, Ľubomir
Kalcher, Kurt
author_facet Mehmeti, Eda
Stanković, Dalibor M.
Chaiyo, Sudkate
Švorc, Ľubomir
Kalcher, Kurt
author_sort Mehmeti, Eda
collection PubMed
description A carbon paste electrode bulk was modified with MnO(2) 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 μM. 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 %. [Figure: see text]
format Online
Article
Text
id pubmed-4846707
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Springer Vienna
record_format MEDLINE/PubMed
spelling pubmed-48467072016-05-21 Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin Mehmeti, Eda Stanković, Dalibor M. Chaiyo, Sudkate Švorc, Ľubomir Kalcher, Kurt Mikrochim Acta Original Paper A carbon paste electrode bulk was modified with MnO(2) 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 μM. 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 %. [Figure: see text] Springer Vienna 2016-02-29 2016 /pmc/articles/PMC4846707/ /pubmed/27217592 http://dx.doi.org/10.1007/s00604-016-1789-4 Text en © The Author(s) 2016 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Paper
Mehmeti, Eda
Stanković, Dalibor M.
Chaiyo, Sudkate
Švorc, Ľubomir
Kalcher, Kurt
Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title_full Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title_fullStr Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title_full_unstemmed Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title_short Manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
title_sort manganese dioxide-modified carbon paste electrode for voltammetric determination of riboflavin
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4846707/
https://www.ncbi.nlm.nih.gov/pubmed/27217592
http://dx.doi.org/10.1007/s00604-016-1789-4
work_keys_str_mv AT mehmetieda manganesedioxidemodifiedcarbonpasteelectrodeforvoltammetricdeterminationofriboflavin
AT stankovicdaliborm manganesedioxidemodifiedcarbonpasteelectrodeforvoltammetricdeterminationofriboflavin
AT chaiyosudkate manganesedioxidemodifiedcarbonpasteelectrodeforvoltammetricdeterminationofriboflavin
AT svorclubomir manganesedioxidemodifiedcarbonpasteelectrodeforvoltammetricdeterminationofriboflavin
AT kalcherkurt manganesedioxidemodifiedcarbonpasteelectrodeforvoltammetricdeterminationofriboflavin

Ejemplares similares