Evaluation of pesticide adsorption in gas chromatographic injector and column

Detalhes bibliográficos
Autor(a) principal: Pinho,Gevany Paulino de
Data de Publicação: 2012
Outros Autores: Silvério,Flaviano Oliveira, Neves,Antônio Augusto, Queiroz,Maria Eliana Lopes Ribeiro de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000400016
Resumo: Components in complex matrices can cause variations in chromatographic response during analysis of pesticides by gas chromatography. These variations are related to the competition between analytes and matrix components for adsorption sites in the chromatographic system. The capacity of the pesticides chlorpyrifos and deltamethrin to be adsorbed in the injector and chromatographic column was evaluated by constructing three isotherms and changing the column heating rate to 10 and 30 ºC min-1. By using ANCOVA to compare the slope of calibration graphs, results showed that the higher the injector temperature (310 ºC) the lower the pesticide adsorption. Also, deltamethrin influenced the adsorption of chlorpyrifos on the column chromatographic.
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spelling Evaluation of pesticide adsorption in gas chromatographic injector and columnmatrix effectspesticidesgas chromatographyComponents in complex matrices can cause variations in chromatographic response during analysis of pesticides by gas chromatography. These variations are related to the competition between analytes and matrix components for adsorption sites in the chromatographic system. The capacity of the pesticides chlorpyrifos and deltamethrin to be adsorbed in the injector and chromatographic column was evaluated by constructing three isotherms and changing the column heating rate to 10 and 30 ºC min-1. By using ANCOVA to compare the slope of calibration graphs, results showed that the higher the injector temperature (310 ºC) the lower the pesticide adsorption. Also, deltamethrin influenced the adsorption of chlorpyrifos on the column chromatographic.Sociedade Brasileira de Química2012-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000400016Química Nova v.35 n.4 2012reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422012000400016info:eu-repo/semantics/openAccessPinho,Gevany Paulino deSilvério,Flaviano OliveiraNeves,Antônio AugustoQueiroz,Maria Eliana Lopes Ribeiro deeng2012-05-28T00:00:00Zoai:scielo:S0100-40422012000400016Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2012-05-28T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Evaluation of pesticide adsorption in gas chromatographic injector and column
title Evaluation of pesticide adsorption in gas chromatographic injector and column
spellingShingle Evaluation of pesticide adsorption in gas chromatographic injector and column
Pinho,Gevany Paulino de
matrix effects
pesticides
gas chromatography
title_short Evaluation of pesticide adsorption in gas chromatographic injector and column
title_full Evaluation of pesticide adsorption in gas chromatographic injector and column
title_fullStr Evaluation of pesticide adsorption in gas chromatographic injector and column
title_full_unstemmed Evaluation of pesticide adsorption in gas chromatographic injector and column
title_sort Evaluation of pesticide adsorption in gas chromatographic injector and column
author Pinho,Gevany Paulino de
author_facet Pinho,Gevany Paulino de
Silvério,Flaviano Oliveira
Neves,Antônio Augusto
Queiroz,Maria Eliana Lopes Ribeiro de
author_role author
author2 Silvério,Flaviano Oliveira
Neves,Antônio Augusto
Queiroz,Maria Eliana Lopes Ribeiro de
author2_role author
author
author
dc.contributor.author.fl_str_mv Pinho,Gevany Paulino de
Silvério,Flaviano Oliveira
Neves,Antônio Augusto
Queiroz,Maria Eliana Lopes Ribeiro de
dc.subject.por.fl_str_mv matrix effects
pesticides
gas chromatography
topic matrix effects
pesticides
gas chromatography
description Components in complex matrices can cause variations in chromatographic response during analysis of pesticides by gas chromatography. These variations are related to the competition between analytes and matrix components for adsorption sites in the chromatographic system. The capacity of the pesticides chlorpyrifos and deltamethrin to be adsorbed in the injector and chromatographic column was evaluated by constructing three isotherms and changing the column heating rate to 10 and 30 ºC min-1. By using ANCOVA to compare the slope of calibration graphs, results showed that the higher the injector temperature (310 ºC) the lower the pesticide adsorption. Also, deltamethrin influenced the adsorption of chlorpyrifos on the column chromatographic.
publishDate 2012
dc.date.none.fl_str_mv 2012-01-01
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=S0100-40422012000400016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000400016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422012000400016
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.35 n.4 2012
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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