Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre

Detalhes bibliográficos
Autor(a) principal: Garcia,Andresa Fabiana
Data de Publicação: 2007
Outros Autores: Rollemberg,Maria do Carmo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000700018
Resumo: The aim of this work was to investigate the copper electrode behavior in the voltammetric determination of glyphosate. The best conditions for this determination are phosphate buffer 0.05 mol L-1 and pH 7.3, and the peak potential is observed at 187 mV. LD and LQ values are 59 µg L-1 e 196 µg L-1, respectively. A water sample was analysed for glyphosate and identical results were obtained by using the analytical curve and the standard addition method. The comparison with a voltammetric method with Hg electrode, after a reaction with nitrite, showed quite concordant results for the analysis of the surface water sample. Therefore, the proposed method can be applied to direct determinations of the herbicide in waters, decreasing the time of analysis; besides, the method is in agreement with the "green chemistry" concept.
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spelling Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobrecopper electrodeglyphosatenatural watersThe aim of this work was to investigate the copper electrode behavior in the voltammetric determination of glyphosate. The best conditions for this determination are phosphate buffer 0.05 mol L-1 and pH 7.3, and the peak potential is observed at 187 mV. LD and LQ values are 59 µg L-1 e 196 µg L-1, respectively. A water sample was analysed for glyphosate and identical results were obtained by using the analytical curve and the standard addition method. The comparison with a voltammetric method with Hg electrode, after a reaction with nitrite, showed quite concordant results for the analysis of the surface water sample. Therefore, the proposed method can be applied to direct determinations of the herbicide in waters, decreasing the time of analysis; besides, the method is in agreement with the "green chemistry" concept.Sociedade Brasileira de Química2007-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000700018Química Nova v.30 n.7 2007reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422007000700018info:eu-repo/semantics/openAccessGarcia,Andresa FabianaRollemberg,Maria do Carmopor2007-12-11T00:00:00Zoai:scielo:S0100-40422007000700018Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2007-12-11T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
title Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
spellingShingle Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
Garcia,Andresa Fabiana
copper electrode
glyphosate
natural waters
title_short Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
title_full Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
title_fullStr Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
title_full_unstemmed Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
title_sort Determinação voltamétrica do herbicida glifosato em águas naturais utilizando eletrodo de cobre
author Garcia,Andresa Fabiana
author_facet Garcia,Andresa Fabiana
Rollemberg,Maria do Carmo
author_role author
author2 Rollemberg,Maria do Carmo
author2_role author
dc.contributor.author.fl_str_mv Garcia,Andresa Fabiana
Rollemberg,Maria do Carmo
dc.subject.por.fl_str_mv copper electrode
glyphosate
natural waters
topic copper electrode
glyphosate
natural waters
description The aim of this work was to investigate the copper electrode behavior in the voltammetric determination of glyphosate. The best conditions for this determination are phosphate buffer 0.05 mol L-1 and pH 7.3, and the peak potential is observed at 187 mV. LD and LQ values are 59 µg L-1 e 196 µg L-1, respectively. A water sample was analysed for glyphosate and identical results were obtained by using the analytical curve and the standard addition method. The comparison with a voltammetric method with Hg electrode, after a reaction with nitrite, showed quite concordant results for the analysis of the surface water sample. Therefore, the proposed method can be applied to direct determinations of the herbicide in waters, decreasing the time of analysis; besides, the method is in agreement with the "green chemistry" concept.
publishDate 2007
dc.date.none.fl_str_mv 2007-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000700018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000700018
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422007000700018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.30 n.7 2007
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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