Thiram and picloram as entrapping agents for lead depicted by electrochemical methods

Detalhes bibliográficos
Autor(a) principal: Valle,Eliana M. A.
Data de Publicação: 2010
Outros Autores: Santamaría,Carolina, Machado,Sergio A. S., Fernández,José M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000600014
Resumo: The affinity of two widely used pesticides of diverse specificities, i.e., the fungicide Thiram and the herbicide Picloram, for lead ions has been studied by an electrochemical approach. The anodic stripping voltammetric profile of the studied metallic ion was significantly affected by the chemical nature of pesticide (ligand) used and new light has been shed on the nature, strength and possible stoichiometry of formed complexes. Thiram caused a pronounced effect on the stripping signals of Pb. Linearization algorithms of titration data with the metal allowed the conditional stability constant to be calculated for Thiram (log K' = 6.8) and Picloram (log K' = 6.0). It was found that both pesticides contribute to the formation of the respective 1:1 complexes with Pb in a high percentage (ca. 83%).
id SBQ-2_e4a4bf97831ffc3772ac0f7ffe3959e8
oai_identifier_str oai:scielo:S0103-50532010000600014
network_acronym_str SBQ-2
network_name_str Journal of the Brazilian Chemical Society (Online)
repository_id_str
spelling Thiram and picloram as entrapping agents for lead depicted by electrochemical methodsThiramPiclorampesticidesleadcomplexationThe affinity of two widely used pesticides of diverse specificities, i.e., the fungicide Thiram and the herbicide Picloram, for lead ions has been studied by an electrochemical approach. The anodic stripping voltammetric profile of the studied metallic ion was significantly affected by the chemical nature of pesticide (ligand) used and new light has been shed on the nature, strength and possible stoichiometry of formed complexes. Thiram caused a pronounced effect on the stripping signals of Pb. Linearization algorithms of titration data with the metal allowed the conditional stability constant to be calculated for Thiram (log K' = 6.8) and Picloram (log K' = 6.0). It was found that both pesticides contribute to the formation of the respective 1:1 complexes with Pb in a high percentage (ca. 83%).Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000600014Journal of the Brazilian Chemical Society v.21 n.6 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000600014info:eu-repo/semantics/openAccessValle,Eliana M. A.Santamaría,CarolinaMachado,Sergio A. S.Fernández,José M.eng2010-07-19T00:00:00Zoai:scielo:S0103-50532010000600014Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-07-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
title Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
spellingShingle Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
Valle,Eliana M. A.
Thiram
Picloram
pesticides
lead
complexation
title_short Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
title_full Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
title_fullStr Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
title_full_unstemmed Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
title_sort Thiram and picloram as entrapping agents for lead depicted by electrochemical methods
author Valle,Eliana M. A.
author_facet Valle,Eliana M. A.
Santamaría,Carolina
Machado,Sergio A. S.
Fernández,José M.
author_role author
author2 Santamaría,Carolina
Machado,Sergio A. S.
Fernández,José M.
author2_role author
author
author
dc.contributor.author.fl_str_mv Valle,Eliana M. A.
Santamaría,Carolina
Machado,Sergio A. S.
Fernández,José M.
dc.subject.por.fl_str_mv Thiram
Picloram
pesticides
lead
complexation
topic Thiram
Picloram
pesticides
lead
complexation
description The affinity of two widely used pesticides of diverse specificities, i.e., the fungicide Thiram and the herbicide Picloram, for lead ions has been studied by an electrochemical approach. The anodic stripping voltammetric profile of the studied metallic ion was significantly affected by the chemical nature of pesticide (ligand) used and new light has been shed on the nature, strength and possible stoichiometry of formed complexes. Thiram caused a pronounced effect on the stripping signals of Pb. Linearization algorithms of titration data with the metal allowed the conditional stability constant to be calculated for Thiram (log K' = 6.8) and Picloram (log K' = 6.0). It was found that both pesticides contribute to the formation of the respective 1:1 complexes with Pb in a high percentage (ca. 83%).
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0103-50532010000600014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000600014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532010000600014
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 Journal of the Brazilian Chemical Society v.21 n.6 2010
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
_version_ 1750318171036844032

Registros relacionados