Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor

A flow-electrolytical cell containing a strand of micro Au modified carbon fiber electrodes (CFE) has been designedand characterized for use in a voltammatric detector for detecting cysteine using high-performance liquid chromatography. Cysteine is more efficiently electrochemical oxidized on a Au /...

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Autores principales: Wang, Lai-Hao, Huang, Wen-Shiuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2012
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3376634/
https://www.ncbi.nlm.nih.gov/pubmed/22737024
http://dx.doi.org/10.3390/s120303562
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author Wang, Lai-Hao
Huang, Wen-Shiuan
author_facet Wang, Lai-Hao
Huang, Wen-Shiuan
author_sort Wang, Lai-Hao
collection PubMed
description A flow-electrolytical cell containing a strand of micro Au modified carbon fiber electrodes (CFE) has been designedand characterized for use in a voltammatric detector for detecting cysteine using high-performance liquid chromatography. Cysteine is more efficiently electrochemical oxidized on a Au /CFE than a bare gold and carbon fiber electrode. The possible reaction mechanism of the oxidation process is described from the relations to scan rate, peak potentials and currents. For the pulse mode, and measurements with suitable experimental parameters, a linear concentration from 0.5 to 5.0 mg·L(−1) was found. The limit of quantification for cysteine was below 60 ng·mL(−1).
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spelling pubmed-33766342012-06-25 Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor Wang, Lai-Hao Huang, Wen-Shiuan Sensors (Basel) Article A flow-electrolytical cell containing a strand of micro Au modified carbon fiber electrodes (CFE) has been designedand characterized for use in a voltammatric detector for detecting cysteine using high-performance liquid chromatography. Cysteine is more efficiently electrochemical oxidized on a Au /CFE than a bare gold and carbon fiber electrode. The possible reaction mechanism of the oxidation process is described from the relations to scan rate, peak potentials and currents. For the pulse mode, and measurements with suitable experimental parameters, a linear concentration from 0.5 to 5.0 mg·L(−1) was found. The limit of quantification for cysteine was below 60 ng·mL(−1). Molecular Diversity Preservation International (MDPI) 2012-03-14 /pmc/articles/PMC3376634/ /pubmed/22737024 http://dx.doi.org/10.3390/s120303562 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Wang, Lai-Hao
Huang, Wen-Shiuan
Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title_full Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title_fullStr Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title_full_unstemmed Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title_short Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor
title_sort electrochemical oxidation of cysteine at a film gold modified carbon fiber microelectrode its application in a flow—through voltammetric sensor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3376634/
https://www.ncbi.nlm.nih.gov/pubmed/22737024
http://dx.doi.org/10.3390/s120303562
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AT huangwenshiuan electrochemicaloxidationofcysteineatafilmgoldmodifiedcarbonfibermicroelectrodeitsapplicationinaflowthroughvoltammetricsensor

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