Decomposition of 14C-Malathion in three brazilian soil samples

Detalhes bibliográficos
Autor(a) principal: Helene, Cecilia Gusmão
Data de Publicação: 2014
Outros Autores: Rüegg, Elza Flores, Lord, Kenneth Alan
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/15627
Resumo: The degradation of 14C-malathion in soil was examined using gas chromatography and radiotracer techniques. About half of the malathion added was degraded within a day in soil from three regions of Brazil. Almost all the radiolabelled material extracted from the Red Latosol (Londrina, PR) was malathion, but metabolites were extracted from the "Sandy" cerrado soil (Planaltina, DF.) and Dark-Red Latosol (Passo Fundo. RS). The proportion of metabolites in the extracts increased until most of the malathion was degraded, after four days. Radiocarbon dioxide was liberated from all three soils at similar rates. When about half of the label had been recovered as carbon dioxide after eight weeks, the rate of evolution diminished.
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spelling Decomposition of 14C-Malathion in three brazilian soil samplesDecomposição do 14C-Malation em amostras de três solos do BrasilCerrado; latosol; radiometric techniquesmalation; Cerrado; latossolo; técnicas radiométricasThe degradation of 14C-malathion in soil was examined using gas chromatography and radiotracer techniques. About half of the malathion added was degraded within a day in soil from three regions of Brazil. Almost all the radiolabelled material extracted from the Red Latosol (Londrina, PR) was malathion, but metabolites were extracted from the "Sandy" cerrado soil (Planaltina, DF.) and Dark-Red Latosol (Passo Fundo. RS). The proportion of metabolites in the extracts increased until most of the malathion was degraded, after four days. Radiocarbon dioxide was liberated from all three soils at similar rates. When about half of the label had been recovered as carbon dioxide after eight weeks, the rate of evolution diminished.A decomposição do 14C-malation em solo foi examinada usando-se cromatografia a gás e técnicas radiométricas. Aproximadamente metade do malation adicionado foi decomposto em um dia, em solos de três regiões do Brasil. Quase todo o material radioativo extraído do Latossolo Roxo (Londrina, PR) era malation, mas metabolitos foram extraídos do solo tipo "Arenoso" do Cerrado (Planaltina, DF) e do Latossolo Vermelho-Escuro Distrófico (Passo Fundo, RS). A proporção de metabolitos nos extratos aumentou até que a maior parte do malation se degradasse em quatro dias. Dióxido de radiocarbono foi liberado dos três solos na mesma taxa, mas quando aproximadamente metade do 14C aplicado foi recuperado na forma de 14CO2, após oito semanas, a taxa de evolução diminuiu.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraHelene, Cecilia GusmãoRüegg, Elza FloresLord, Kenneth Alan2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15627Pesquisa Agropecuaria Brasileira; v.17, n.2, fev. 1982; 293-298Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 293-2981678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15627/9629info:eu-repo/semantics/openAccess2014-04-16T12:24:17Zoai:ojs.seer.sct.embrapa.br:article/15627Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T12:24:17Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Decomposition of 14C-Malathion in three brazilian soil samples
Decomposição do 14C-Malation em amostras de três solos do Brasil
title Decomposition of 14C-Malathion in three brazilian soil samples
spellingShingle Decomposition of 14C-Malathion in three brazilian soil samples
Helene, Cecilia Gusmão
Cerrado; latosol; radiometric techniques
malation; Cerrado; latossolo; técnicas radiométricas
title_short Decomposition of 14C-Malathion in three brazilian soil samples
title_full Decomposition of 14C-Malathion in three brazilian soil samples
title_fullStr Decomposition of 14C-Malathion in three brazilian soil samples
title_full_unstemmed Decomposition of 14C-Malathion in three brazilian soil samples
title_sort Decomposition of 14C-Malathion in three brazilian soil samples
author Helene, Cecilia Gusmão
author_facet Helene, Cecilia Gusmão
Rüegg, Elza Flores
Lord, Kenneth Alan
author_role author
author2 Rüegg, Elza Flores
Lord, Kenneth Alan
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Helene, Cecilia Gusmão
Rüegg, Elza Flores
Lord, Kenneth Alan
dc.subject.por.fl_str_mv Cerrado; latosol; radiometric techniques
malation; Cerrado; latossolo; técnicas radiométricas
topic Cerrado; latosol; radiometric techniques
malation; Cerrado; latossolo; técnicas radiométricas
description The degradation of 14C-malathion in soil was examined using gas chromatography and radiotracer techniques. About half of the malathion added was degraded within a day in soil from three regions of Brazil. Almost all the radiolabelled material extracted from the Red Latosol (Londrina, PR) was malathion, but metabolites were extracted from the "Sandy" cerrado soil (Planaltina, DF.) and Dark-Red Latosol (Passo Fundo. RS). The proportion of metabolites in the extracts increased until most of the malathion was degraded, after four days. Radiocarbon dioxide was liberated from all three soils at similar rates. When about half of the label had been recovered as carbon dioxide after eight weeks, the rate of evolution diminished.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
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/15627
url https://seer.sct.embrapa.br/index.php/pab/article/view/15627
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/15627/9629
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.17, n.2, fev. 1982; 293-298
Pesquisa Agropecuária Brasileira; v.17, n.2, fev. 1982; 293-298
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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