Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment
Autor(a) principal: | |
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Data de Publicação: | 2005 |
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/10316/5096 https://doi.org/10.1016/j.talanta.2005.08.065 |
Resumo: | The most essential limitation of batch-injection analysis (BIA) methodology compared to other flow methods (CFA, FIA, SIA) is the lack of possibility of on-line sample processing in the measuring system. Some procedures of on-line sample pretreatment in BIA are possible by changing the plastic tip of the automatic micropipette used for sample injection into a flow-through reactor, e.g. by packing it with a bed of a solid sorbent. This concept is employed in the voltammetric stripping determinations of trace metals using a bed of commercial chelating resin Chelex-100. It was found that, besides the electrochemical preconcentration of analytes in the form of amalgams on the surface of mercury thin film electrodes, an approximately 10-fold additional preconcentration can be achieved on the packed sorbent bed by using different volumes of aspirated sample solution and eluent. This procedure allows also efficient elimination of some matrix effects. |
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Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatmentBatch-injection analysisStripping voltammetrySolid-phase extractionTrace metalsThe most essential limitation of batch-injection analysis (BIA) methodology compared to other flow methods (CFA, FIA, SIA) is the lack of possibility of on-line sample processing in the measuring system. Some procedures of on-line sample pretreatment in BIA are possible by changing the plastic tip of the automatic micropipette used for sample injection into a flow-through reactor, e.g. by packing it with a bed of a solid sorbent. This concept is employed in the voltammetric stripping determinations of trace metals using a bed of commercial chelating resin Chelex-100. It was found that, besides the electrochemical preconcentration of analytes in the form of amalgams on the surface of mercury thin film electrodes, an approximately 10-fold additional preconcentration can be achieved on the packed sorbent bed by using different volumes of aspirated sample solution and eluent. This procedure allows also efficient elimination of some matrix effects.http://www.sciencedirect.com/science/article/B6THP-4H8FPKW-2/1/7418c34e861de4570ffb23e84d3fad442005info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/5096http://hdl.handle.net/10316/5096https://doi.org/10.1016/j.talanta.2005.08.065engTalanta. 68:2 (2005) 394-400Trojanowicz, MarekKozminski, PrzemyslawDias, HumbertoBrett, Christopher M. A.info: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:RCAAP2020-11-06T16:59:21Zoai:estudogeral.uc.pt:10316/5096Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:01:38.604575Repositório 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 stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
title |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
spellingShingle |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment Trojanowicz, Marek Batch-injection analysis Stripping voltammetry Solid-phase extraction Trace metals |
title_short |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
title_full |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
title_fullStr |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
title_full_unstemmed |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
title_sort |
Batch-injection stripping voltammetry (tube-less flow-injection analysis) of trace metals with on-line sample pretreatment |
author |
Trojanowicz, Marek |
author_facet |
Trojanowicz, Marek Kozminski, Przemyslaw Dias, Humberto Brett, Christopher M. A. |
author_role |
author |
author2 |
Kozminski, Przemyslaw Dias, Humberto Brett, Christopher M. A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Trojanowicz, Marek Kozminski, Przemyslaw Dias, Humberto Brett, Christopher M. A. |
dc.subject.por.fl_str_mv |
Batch-injection analysis Stripping voltammetry Solid-phase extraction Trace metals |
topic |
Batch-injection analysis Stripping voltammetry Solid-phase extraction Trace metals |
description |
The most essential limitation of batch-injection analysis (BIA) methodology compared to other flow methods (CFA, FIA, SIA) is the lack of possibility of on-line sample processing in the measuring system. Some procedures of on-line sample pretreatment in BIA are possible by changing the plastic tip of the automatic micropipette used for sample injection into a flow-through reactor, e.g. by packing it with a bed of a solid sorbent. This concept is employed in the voltammetric stripping determinations of trace metals using a bed of commercial chelating resin Chelex-100. It was found that, besides the electrochemical preconcentration of analytes in the form of amalgams on the surface of mercury thin film electrodes, an approximately 10-fold additional preconcentration can be achieved on the packed sorbent bed by using different volumes of aspirated sample solution and eluent. This procedure allows also efficient elimination of some matrix effects. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005 |
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/10316/5096 http://hdl.handle.net/10316/5096 https://doi.org/10.1016/j.talanta.2005.08.065 |
url |
http://hdl.handle.net/10316/5096 https://doi.org/10.1016/j.talanta.2005.08.065 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Talanta. 68:2 (2005) 394-400 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133907394756608 |