Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode
An exfoliated graphite-polystyrene composite electrode was evaluated as analternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na2SO4supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C wereobtained in the concentrations range of oxalic aci...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2007-04-01
|
Series: | Sensors |
Subjects: | |
Online Access: | http://www.mdpi.com/1424-8220/7/4/615/ |
id |
doaj-2b458cfc18124d1990f6349ea3d6902b |
---|---|
record_format |
Article |
spelling |
doaj-2b458cfc18124d1990f6349ea3d6902b2020-11-24T20:42:01ZengMDPI AGSensors1424-82202007-04-017461562710.3390/s7040615Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite ElectrodeJoop SchoonmanStephen PickenPlamen MalchevGeorgeta BurticaAniela PopIoana CorbCiprian RadovanFlorica ManeaAn exfoliated graphite-polystyrene composite electrode was evaluated as analternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na2SO4supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C wereobtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05mM, and recovery degree of 98%, without need of surface renewing between successiveruns. The accuracy of the methods was evaluated as excellent comparing the detection resultswith that obtained using conventional KMnO4 titration method. In addition, the apparentdiffusion coefficient of oxalic acid D was found to be around 2.89 · 10-8 cm2·s-1 by CA andCV.http://www.mdpi.com/1424-8220/7/4/615/exfoliated graphite-polystyrene composite electrodeoxalic acidelectrochemical oxidationelectrochemical determination |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Joop Schoonman Stephen Picken Plamen Malchev Georgeta Burtica Aniela Pop Ioana Corb Ciprian Radovan Florica Manea |
spellingShingle |
Joop Schoonman Stephen Picken Plamen Malchev Georgeta Burtica Aniela Pop Ioana Corb Ciprian Radovan Florica Manea Electrochemical Oxidation and Determination of Oxalic Acid at an Exfoliated Graphite-Polystyrene Composite Electrode Sensors exfoliated graphite-polystyrene composite electrode oxalic acid electrochemical oxidation electrochemical determination |
author_facet |
Joop Schoonman Stephen Picken Plamen Malchev Georgeta Burtica Aniela Pop Ioana Corb Ciprian Radovan Florica Manea |
author_sort |
Joop Schoonman |
title |
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_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_sort |
electrochemical oxidation and determination of oxalic acid at an exfoliated graphite-polystyrene composite electrode |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2007-04-01 |
description |
An exfoliated graphite-polystyrene composite electrode was evaluated as analternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na2SO4supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C wereobtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05mM, and recovery degree of 98%, without need of surface renewing between successiveruns. The accuracy of the methods was evaluated as excellent comparing the detection resultswith that obtained using conventional KMnO4 titration method. In addition, the apparentdiffusion coefficient of oxalic acid D was found to be around 2.89 · 10-8 cm2·s-1 by CA andCV. |
topic |
exfoliated graphite-polystyrene composite electrode oxalic acid electrochemical oxidation electrochemical determination |
url |
http://www.mdpi.com/1424-8220/7/4/615/ |
work_keys_str_mv |
AT joopschoonman electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT stephenpicken electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT plamenmalchev electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT georgetaburtica electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT anielapop electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT ioanacorb electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT ciprianradovan electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode AT floricamanea electrochemicaloxidationanddeterminationofoxalicacidatanexfoliatedgraphitepolystyrenecompositeelectrode |
_version_ |
1716823542079684608 |