Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt
Autor(a) principal: | |
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Data de Publicação: | 1996 |
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/10316/8306 https://doi.org/10.1002/elan.1140080707 |
Resumo: | Square wave adsorptive stripping voltammetry (AdSV) in conjunction with the batch injection analysis technique has been investigated at mercury thin-film electrodes, using analysis of nickel and cobalt ions with nioxime ligand as example, and injection of sample volumes of le100muL. Experiments were conducted in a HEPES neutral buffered medium, suitable for analysis of biological fluids. Sensitivity is maximized by continuing the adsorptive accumulation after the end of the injection period, and employing the lowest possible injection rate from the electronic micropipette of 24.5muLs-1. The practical detection limit is 5 nM for nickel and 2 nM for cobalt. Comparison is made with batch injection analysis with anodic stripping voltammetry and the merits of the technique relative to continuous flow-through methods are assessed. |
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Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobaltSquare wave adsorptive stripping voltammetry (AdSV) in conjunction with the batch injection analysis technique has been investigated at mercury thin-film electrodes, using analysis of nickel and cobalt ions with nioxime ligand as example, and injection of sample volumes of le100muL. Experiments were conducted in a HEPES neutral buffered medium, suitable for analysis of biological fluids. Sensitivity is maximized by continuing the adsorptive accumulation after the end of the injection period, and employing the lowest possible injection rate from the electronic micropipette of 24.5muLs-1. The practical detection limit is 5 nM for nickel and 2 nM for cobalt. Comparison is made with batch injection analysis with anodic stripping voltammetry and the merits of the technique relative to continuous flow-through methods are assessed.1996info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/8306http://hdl.handle.net/10316/8306https://doi.org/10.1002/elan.1140080707engElectroanalysis. 8:7 (1996) 639-642Brett, Christopher M. A.Brett, Ana Maria OliveiraTugulea, Laurainfo: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:RCAAP2020-05-25T13:15:00Zoai:estudogeral.uc.pt:10316/8306Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:25.168732Repositório 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 |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
title |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
spellingShingle |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt Brett, Christopher M. A. |
title_short |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
title_full |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
title_fullStr |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
title_full_unstemmed |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
title_sort |
Batch injection analysis with adsorptive stripping voltammetry for the determination of traces of nickel and cobalt |
author |
Brett, Christopher M. A. |
author_facet |
Brett, Christopher M. A. Brett, Ana Maria Oliveira Tugulea, Laura |
author_role |
author |
author2 |
Brett, Ana Maria Oliveira Tugulea, Laura |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Brett, Christopher M. A. Brett, Ana Maria Oliveira Tugulea, Laura |
description |
Square wave adsorptive stripping voltammetry (AdSV) in conjunction with the batch injection analysis technique has been investigated at mercury thin-film electrodes, using analysis of nickel and cobalt ions with nioxime ligand as example, and injection of sample volumes of le100muL. Experiments were conducted in a HEPES neutral buffered medium, suitable for analysis of biological fluids. Sensitivity is maximized by continuing the adsorptive accumulation after the end of the injection period, and employing the lowest possible injection rate from the electronic micropipette of 24.5muLs-1. The practical detection limit is 5 nM for nickel and 2 nM for cobalt. Comparison is made with batch injection analysis with anodic stripping voltammetry and the merits of the technique relative to continuous flow-through methods are assessed. |
publishDate |
1996 |
dc.date.none.fl_str_mv |
1996 |
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/10316/8306 http://hdl.handle.net/10316/8306 https://doi.org/10.1002/elan.1140080707 |
url |
http://hdl.handle.net/10316/8306 https://doi.org/10.1002/elan.1140080707 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electroanalysis. 8:7 (1996) 639-642 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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 |
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1799133905771560960 |