Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode

An exfoliated graphite-polystyrene composite electrode was evaluated as an alternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na(2)SO(4) supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C were obtained in the concentrations range of oxa...

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Autores principales: Manea, Florica, Radovan, Ciprian, Corb, Ioana, Pop, Aniela, Burtica, Georgeta, Malchev, Plamen, Picken, Stephen, Schoonman, Joop
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2007
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3800367/
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author Manea, Florica
Radovan, Ciprian
Corb, Ioana
Pop, Aniela
Burtica, Georgeta
Malchev, Plamen
Picken, Stephen
Schoonman, Joop
author_facet Manea, Florica
Radovan, Ciprian
Corb, Ioana
Pop, Aniela
Burtica, Georgeta
Malchev, Plamen
Picken, Stephen
Schoonman, Joop
author_sort Manea, Florica
collection PubMed
description An exfoliated graphite-polystyrene composite electrode was evaluated as an alternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na(2)SO(4) supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C were obtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05 mM, and recovery degree of 98%, without need of surface renewing between successive runs. The accuracy of the methods was evaluated as excellent comparing the detection results with that obtained using conventional KMnO(4) titration method. In addition, the apparent diffusion coefficient of oxalic acid D was found to be around 2.89 · 10(-8) cm(2)·s(-1) by CA and CV.
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spelling pubmed-38003672013-10-22 Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode Manea, Florica Radovan, Ciprian Corb, Ioana Pop, Aniela Burtica, Georgeta Malchev, Plamen Picken, Stephen Schoonman, Joop Sensors (Basel) Full Research Paper An exfoliated graphite-polystyrene composite electrode was evaluated as an alternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na(2)SO(4) supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C were obtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05 mM, and recovery degree of 98%, without need of surface renewing between successive runs. The accuracy of the methods was evaluated as excellent comparing the detection results with that obtained using conventional KMnO(4) titration method. In addition, the apparent diffusion coefficient of oxalic acid D was found to be around 2.89 · 10(-8) cm(2)·s(-1) by CA and CV. Molecular Diversity Preservation International (MDPI) 2007-04-30 /pmc/articles/PMC3800367/ Text en © 2007 by MDPI (http://www.mdpi.org). Reproduction is permitted for noncommercial purposes.
spellingShingle Full Research Paper
Manea, Florica
Radovan, Ciprian
Corb, Ioana
Pop, Aniela
Burtica, Georgeta
Malchev, Plamen
Picken, Stephen
Schoonman, Joop
Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title_full Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title_fullStr Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title_full_unstemmed Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title_short Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
title_sort electrochemical oxidation and determination of oxalic acid at an exfoliated graphite-polystyrene composite electrode
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3800367/
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