Characteristic behavior of macro‐, semimicro‐ and microelectrodes in voltammetric and chronoamperometric measurements
Identifieur interne : 000890 ( Istex/Corpus ); précédent : 000889; suivant : 000891Characteristic behavior of macro‐, semimicro‐ and microelectrodes in voltammetric and chronoamperometric measurements
Auteurs : Hans-Peter Nirmaier ; Günter HenzeSource :
- Electroanalysis [ 1040-0397 ] ; 1997-05.
English descriptors
- KwdEn :
Abstract
The advantages of microelectrodes such as the improvement of signal‐to‐noise ratio, the ability to perform electrochemical measurements in high resistive solutions and small RC‐time constants give the possibility of an extended use for voltammetric and chronoamperometric techniques in analytical chemistry. In this comparative study, the microelectrode properties of three selected electrodes were examined. The characterization of a RAM‐microarray electrode, an epoxy‐impregnated carbon electrode and a conventional glassy carbon macroelectrode was performed by cyclic voltammetry at different scan rates, by DP‐voltammetric measurements using different concentrations of supporting electrolyte and by transient measurements. It could be shown, that in comparison to the microarray electrode and to the glassy carbon macroelectrode, respectively, the results obtained by using the epoxy‐impregnated carbon electrode are caused by its semimicroelectrode character.
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DOI: 10.1002/elan.1140090808
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<affiliation>Department of Chemistry, University of Kaiserslautern and Laboratories of Analytical Chemistry, University of Trier, P.O.‐Box 3825, D‐54228 Trier, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Günter</namePart>
<namePart type="family">Henze</namePart>
<affiliation>Department of Chemistry, University of Kaiserslautern and Laboratories of Analytical Chemistry, University of Trier, P.O.‐Box 3825, D‐54228 Trier, Germany</affiliation>
<affiliation>Department of Chemistry, University of Kaiserslautern and Laboratories of Analytical Chemistry, University of Trier, P.O.‐Box 3825, D‐54228 Trier, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="article" displayLabel="article"></genre>
<originInfo><publisher>VCH Verlagsgesellschaft mbH</publisher>
<place><placeTerm type="text">Weinheim</placeTerm>
</place>
<dateIssued encoding="w3cdtf">1997-05</dateIssued>
<dateCaptured encoding="w3cdtf">1996-10-11</dateCaptured>
<dateValid encoding="w3cdtf">1996-12-16</dateValid>
<copyrightDate encoding="w3cdtf">1997</copyrightDate>
</originInfo>
<language><languageTerm type="code" authority="rfc3066">en</languageTerm>
<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
</language>
<physicalDescription><internetMediaType>text/html</internetMediaType>
<extent unit="figures">10</extent>
<extent unit="tables">2</extent>
<extent unit="references">16</extent>
</physicalDescription>
<abstract lang="en">The advantages of microelectrodes such as the improvement of signal‐to‐noise ratio, the ability to perform electrochemical measurements in high resistive solutions and small RC‐time constants give the possibility of an extended use for voltammetric and chronoamperometric techniques in analytical chemistry. In this comparative study, the microelectrode properties of three selected electrodes were examined. The characterization of a RAM‐microarray electrode, an epoxy‐impregnated carbon electrode and a conventional glassy carbon macroelectrode was performed by cyclic voltammetry at different scan rates, by DP‐voltammetric measurements using different concentrations of supporting electrolyte and by transient measurements. It could be shown, that in comparison to the microarray electrode and to the glassy carbon macroelectrode, respectively, the results obtained by using the epoxy‐impregnated carbon electrode are caused by its semimicroelectrode character.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>Microelectrodes</topic>
<topic>Chronoamperometry</topic>
<topic>Resistive meolium</topic>
<topic>Diffusion</topic>
<topic>RAM electrode</topic>
<topic>Graphite epoxy electrode</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Electroanalysis</title>
</titleInfo>
<titleInfo type="abbreviated"><title>Electroanalysis</title>
</titleInfo>
<genre type="journal">journal</genre>
<subject><genre>article-category</genre>
<topic>Feature Article</topic>
</subject>
<identifier type="ISSN">1040-0397</identifier>
<identifier type="eISSN">1521-4109</identifier>
<identifier type="DOI">10.1002/(ISSN)1521-4109</identifier>
<identifier type="PublisherID">ELAN</identifier>
<part><date>1997</date>
<detail type="volume"><caption>vol.</caption>
<number>9</number>
</detail>
<detail type="issue"><caption>no.</caption>
<number>8</number>
</detail>
<extent unit="pages"><start>619</start>
<end>624</end>
<total>6</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">30CA65445EB29DB86D32E7DB812A118FC5B8C827</identifier>
<identifier type="DOI">10.1002/elan.1140090808</identifier>
<identifier type="ArticleID">ELAN1140090808</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Copyright © 1997 VCH Verlagsgesellschaft mbH</accessCondition>
<recordInfo><recordContentSource>WILEY</recordContentSource>
<recordOrigin>VCH Verlagsgesellschaft mbH</recordOrigin>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
</record>
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