Degradation of the insecticide malathion in soils from Brazilian northeast region

Detalhes bibliográficos
Autor(a) principal: Hirata, Rodobiko
Data de Publicação: 2014
Outros Autores: Prasad, Shiva, Luchini, Luiz Carlos, Nunes, Francisco de Assis P., Mesquita, Terezinha B., Ruegg, Elza F.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/14730
Resumo: The chemical transformation of the insecticide malathion in four soil types from the States of Alagoas and Paraíba was analyzed by using radiometric techniques. The rate of degradation in the four soils was related to the adsorption of the insecticide by soil components, suggesting that in three profiles of Red-Yellow Podzolic soil the degradation took place by a chemical process catalyzed by adsorption. In the profile of Light-Humic dystrophic Gley soil the adsorption retarded the transformation of malathion into other chemical species; this might be related to the type of clay mineral present in the soil structure. The 14CO2 evolution was very slow as compared with the transformation of the malathion molecule, indicating that the intermediate metabolites are chemically more stable than malathion from which they originated.
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spelling Degradation of the insecticide malathion in soils from Brazilian northeast regionDegradação do inseticida malation em solos do nordeste brasileiroadsorção; técnicas radiométricasThe chemical transformation of the insecticide malathion in four soil types from the States of Alagoas and Paraíba was analyzed by using radiometric techniques. The rate of degradation in the four soils was related to the adsorption of the insecticide by soil components, suggesting that in three profiles of Red-Yellow Podzolic soil the degradation took place by a chemical process catalyzed by adsorption. In the profile of Light-Humic dystrophic Gley soil the adsorption retarded the transformation of malathion into other chemical species; this might be related to the type of clay mineral present in the soil structure. The 14CO2 evolution was very slow as compared with the transformation of the malathion molecule, indicating that the intermediate metabolites are chemically more stable than malathion from which they originated.Analisa-se a transformação química do malation, em quatro solos dos estados de Alagoas e Paraíba, usando-se técnicas radiométricas. A velocidade de degradação do inseticida nos quatro solos foi relacionada à sua extensão de adsorção pelos componentes do solo, sugerindo que nos três perfis de solo Podzólico Vermelho-Amarelo os fenômenos degradativos tenham ocorrido por reações químicas catalisadas nas superfícies de adsorção. Para o Glei Pouco Húmico distrófico, a adsorção retardou a transformação do praguicida em outros compostos químicos, sendo provável que esse atraso esteja relacionado com o tipo de argila presente na estrutura do solo. A evolução do 14CO2 foi muito lenta, quando comparada com a transformação do malation, evidenciando que os metabólitos intermediários são mais estáveis quimicamente que o malation do qual se originaram.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraHirata, RodobikoPrasad, ShivaLuchini, Luiz CarlosNunes, Francisco de Assis P.Mesquita, Terezinha B.Ruegg, Elza F.2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/14730Pesquisa Agropecuaria Brasileira; v.21, n.3, mar. 1986; 285-292Pesquisa Agropecuária Brasileira; v.21, n.3, mar. 1986; 285-2921678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/14730/8415info:eu-repo/semantics/openAccess2014-10-17T18:56:24Zoai:ojs.seer.sct.embrapa.br:article/14730Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-17T18:56:24Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Degradation of the insecticide malathion in soils from Brazilian northeast region
Degradação do inseticida malation em solos do nordeste brasileiro
title Degradation of the insecticide malathion in soils from Brazilian northeast region
spellingShingle Degradation of the insecticide malathion in soils from Brazilian northeast region
Hirata, Rodobiko
adsorção; técnicas radiométricas
title_short Degradation of the insecticide malathion in soils from Brazilian northeast region
title_full Degradation of the insecticide malathion in soils from Brazilian northeast region
title_fullStr Degradation of the insecticide malathion in soils from Brazilian northeast region
title_full_unstemmed Degradation of the insecticide malathion in soils from Brazilian northeast region
title_sort Degradation of the insecticide malathion in soils from Brazilian northeast region
author Hirata, Rodobiko
author_facet Hirata, Rodobiko
Prasad, Shiva
Luchini, Luiz Carlos
Nunes, Francisco de Assis P.
Mesquita, Terezinha B.
Ruegg, Elza F.
author_role author
author2 Prasad, Shiva
Luchini, Luiz Carlos
Nunes, Francisco de Assis P.
Mesquita, Terezinha B.
Ruegg, Elza F.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Hirata, Rodobiko
Prasad, Shiva
Luchini, Luiz Carlos
Nunes, Francisco de Assis P.
Mesquita, Terezinha B.
Ruegg, Elza F.
dc.subject.none.fl_str_mv
dc.subject.por.fl_str_mv adsorção; técnicas radiométricas
topic adsorção; técnicas radiométricas
description The chemical transformation of the insecticide malathion in four soil types from the States of Alagoas and Paraíba was analyzed by using radiometric techniques. The rate of degradation in the four soils was related to the adsorption of the insecticide by soil components, suggesting that in three profiles of Red-Yellow Podzolic soil the degradation took place by a chemical process catalyzed by adsorption. In the profile of Light-Humic dystrophic Gley soil the adsorption retarded the transformation of malathion into other chemical species; this might be related to the type of clay mineral present in the soil structure. The 14CO2 evolution was very slow as compared with the transformation of the malathion molecule, indicating that the intermediate metabolites are chemically more stable than malathion from which they originated.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/14730
url https://seer.sct.embrapa.br/index.php/pab/article/view/14730
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/14730/8415
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.21, n.3, mar. 1986; 285-292
Pesquisa Agropecuária Brasileira; v.21, n.3, mar. 1986; 285-292
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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