Amperometric and Voltammetric Detection in Batch Injection Analysis
Autor(a) principal: | |
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Data de Publicação: | 1994 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/10308 https://doi.org/10.1021/ac00091a024 |
Resumo: | Batch injection analysis (BIA) enables the investigation of electrode reactions using extremely small volumes of analyte solution of 100 pL. The potentialities of amperometric and voltammetric detection have been examined by studying the oxidation of ferrocyanide and ascorbic acid at platinum electrodes and using sample volumes between 10 and 100 pL. The electrolysis efficiency as a function of injected volume has been addressed. Consecutive injections during a slow linear potential sweep permit the registering of a point-by-point pseudo-steady-state voltammetric curve and allow the measurement of thermodynamic and kinetic parameters as well as the determination of concentration. Cyclic voltammetry during or after injection can aid in mechanistic studies. The combination of BIA and square-wave voltammetry leads to a continuous voltammetric profile from a single injection using 100 p L calibration plots show a factor of 4 sensitivity increase relative to fixed-potential amperometric detection. |
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Amperometric and Voltammetric Detection in Batch Injection AnalysisBatch injection analysis (BIA) enables the investigation of electrode reactions using extremely small volumes of analyte solution of 100 pL. The potentialities of amperometric and voltammetric detection have been examined by studying the oxidation of ferrocyanide and ascorbic acid at platinum electrodes and using sample volumes between 10 and 100 pL. The electrolysis efficiency as a function of injected volume has been addressed. Consecutive injections during a slow linear potential sweep permit the registering of a point-by-point pseudo-steady-state voltammetric curve and allow the measurement of thermodynamic and kinetic parameters as well as the determination of concentration. Cyclic voltammetry during or after injection can aid in mechanistic studies. The combination of BIA and square-wave voltammetry leads to a continuous voltammetric profile from a single injection using 100 p L calibration plots show a factor of 4 sensitivity increase relative to fixed-potential amperometric detection.American Chemical Society1994-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/10308http://hdl.handle.net/10316/10308https://doi.org/10.1021/ac00091a024engAnalytical Chemistry. 66:19 (1994) 3145-31500003-2700Brett, Christopher M. A.Brett, Ana Maria OliveiraMitoseriu, Lucian Costelinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-05-25T13:13:19Zoai:estudogeral.uc.pt:10316/10308Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:11.645639Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
title |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
spellingShingle |
Amperometric and Voltammetric Detection in Batch Injection Analysis Brett, Christopher M. A. |
title_short |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
title_full |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
title_fullStr |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
title_full_unstemmed |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
title_sort |
Amperometric and Voltammetric Detection in Batch Injection Analysis |
author |
Brett, Christopher M. A. |
author_facet |
Brett, Christopher M. A. Brett, Ana Maria Oliveira Mitoseriu, Lucian Costel |
author_role |
author |
author2 |
Brett, Ana Maria Oliveira Mitoseriu, Lucian Costel |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Brett, Christopher M. A. Brett, Ana Maria Oliveira Mitoseriu, Lucian Costel |
description |
Batch injection analysis (BIA) enables the investigation of electrode reactions using extremely small volumes of analyte solution of 100 pL. The potentialities of amperometric and voltammetric detection have been examined by studying the oxidation of ferrocyanide and ascorbic acid at platinum electrodes and using sample volumes between 10 and 100 pL. The electrolysis efficiency as a function of injected volume has been addressed. Consecutive injections during a slow linear potential sweep permit the registering of a point-by-point pseudo-steady-state voltammetric curve and allow the measurement of thermodynamic and kinetic parameters as well as the determination of concentration. Cyclic voltammetry during or after injection can aid in mechanistic studies. The combination of BIA and square-wave voltammetry leads to a continuous voltammetric profile from a single injection using 100 p L calibration plots show a factor of 4 sensitivity increase relative to fixed-potential amperometric detection. |
publishDate |
1994 |
dc.date.none.fl_str_mv |
1994-10 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/10308 http://hdl.handle.net/10316/10308 https://doi.org/10.1021/ac00091a024 |
url |
http://hdl.handle.net/10316/10308 https://doi.org/10.1021/ac00091a024 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Analytical Chemistry. 66:19 (1994) 3145-3150 0003-2700 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
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instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133904326623232 |