Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode

Detalhes bibliográficos
Autor(a) principal: Morais, Simone
Data de Publicação: 2005
Outros Autores: Tavares, Oriza, Delerue-Matos, Cristina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.22/2981
Resumo: An extraction-adsorptive stripping voltammetric procedure for the determination of the pesticide dialifos in soil samples using microwave-assisted solvent extraction and a mercury film ultramicroelectrode was developed. The method is based on the use of hexane-acetone solvent (1:1, v/v) and on controlled adsorptive accumulation of the insecticide at the potential of -0.10V (versus Ag/AgCl) in the presence of Britton-Robinson buffer (pH 2.0). Soil sample extracts were analyzed directly after drying and redissolution with the supporting electrolyte, but without other pretreatment. The limit of detection obtained for a 10sec collection time was 2.0x10-8 mol L-1. Recovery experiments for the global procedure, at the 0.100µgg-1 level, gave satisfactory average and standard deviation results for the two different soils tested.
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spelling Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrodeDialifosMercury film ultramicroelectrodeMicrowave-assisted solvent extractionSoilsAn extraction-adsorptive stripping voltammetric procedure for the determination of the pesticide dialifos in soil samples using microwave-assisted solvent extraction and a mercury film ultramicroelectrode was developed. The method is based on the use of hexane-acetone solvent (1:1, v/v) and on controlled adsorptive accumulation of the insecticide at the potential of -0.10V (versus Ag/AgCl) in the presence of Britton-Robinson buffer (pH 2.0). Soil sample extracts were analyzed directly after drying and redissolution with the supporting electrolyte, but without other pretreatment. The limit of detection obtained for a 10sec collection time was 2.0x10-8 mol L-1. Recovery experiments for the global procedure, at the 0.100µgg-1 level, gave satisfactory average and standard deviation results for the two different soils tested.Taylor & FrancisRepositório Científico do Instituto Politécnico do PortoMorais, SimoneTavares, OrizaDelerue-Matos, Cristina2013-11-27T12:01:27Z20052005-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.22/2981eng0003-271910.1081/AL-120018246info: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:RCAAP2023-03-13T12:42:40Zoai:recipp.ipp.pt:10400.22/2981Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:24:00.779940Repositório 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 Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
title Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
spellingShingle Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
Morais, Simone
Dialifos
Mercury film ultramicroelectrode
Microwave-assisted solvent extraction
Soils
title_short Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
title_full Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
title_fullStr Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
title_full_unstemmed Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
title_sort Voltammetric determination of dialifos in soils with a mercury film ultramicroelectrode
author Morais, Simone
author_facet Morais, Simone
Tavares, Oriza
Delerue-Matos, Cristina
author_role author
author2 Tavares, Oriza
Delerue-Matos, Cristina
author2_role author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico do Porto
dc.contributor.author.fl_str_mv Morais, Simone
Tavares, Oriza
Delerue-Matos, Cristina
dc.subject.por.fl_str_mv Dialifos
Mercury film ultramicroelectrode
Microwave-assisted solvent extraction
Soils
topic Dialifos
Mercury film ultramicroelectrode
Microwave-assisted solvent extraction
Soils
description An extraction-adsorptive stripping voltammetric procedure for the determination of the pesticide dialifos in soil samples using microwave-assisted solvent extraction and a mercury film ultramicroelectrode was developed. The method is based on the use of hexane-acetone solvent (1:1, v/v) and on controlled adsorptive accumulation of the insecticide at the potential of -0.10V (versus Ag/AgCl) in the presence of Britton-Robinson buffer (pH 2.0). Soil sample extracts were analyzed directly after drying and redissolution with the supporting electrolyte, but without other pretreatment. The limit of detection obtained for a 10sec collection time was 2.0x10-8 mol L-1. Recovery experiments for the global procedure, at the 0.100µgg-1 level, gave satisfactory average and standard deviation results for the two different soils tested.
publishDate 2005
dc.date.none.fl_str_mv 2005
2005-01-01T00:00:00Z
2013-11-27T12:01:27Z
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/10400.22/2981
url http://hdl.handle.net/10400.22/2981
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0003-2719
10.1081/AL-120018246
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
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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