Heavy metals contamination of a watershed in Caetés by the use of agrochemicals

Detalhes bibliográficos
Autor(a) principal: Ramalho, Jair Felipe Gracia Pereira
Data de Publicação: 2000
Outros Autores: Sobrinho, Nelson Moura Brasil do Amaral, Velloso, Ary Carlos Xavier
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/5917
Resumo: To evaluate heavy metals contamination of soil, sediments, water and plants of the Caetés watershed, in Paty do Alferes, RJ, Brazil, by the use of agrochemicals, samples from two areas with different declivities (25% and 45%) were analysed, in 1996, for total contents of Cd, Co, Cu, Mn, Ni, Pb and Zn. The results for the soils under pasture (lately horticulture) showed higher heavy metals contents in comparison to the brushwood area. However, these contents didn't reach the critical levels for soils, and these elements were present in chemical forms of low disponibility for plant absorption, as it was seen in the very low levels of heavy metals in the samples of tomato (Lycopersicum esculentum L.), green pepper (Capsicum annuum L.), cabbage (Brassica oleracea L.) and cucumber (Cucumis sativus L.). The behaviour of the heavy metals in the sediment samples were the same of the soil samples, being these elements distributed, in higher percentages, in the residual, bonded to Mn and Fe oxides and bonded to organic matter fractions. The water samples from the stream and dam showed higher levels than the international standards for Cd, Pb and Mn.
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spelling Heavy metals contamination of a watershed in Caetés by the use of agrochemicalsContaminação da microbacia de Caetés com metais pesados pelo uso de agroquímicoschemical contamination; pesticides; metallic elements; pollution; soil; sediment; water; vegetablescontaminação química; pesticidas; elementos metálicos; poluição; solo; sedimento; água; hortaliçasTo evaluate heavy metals contamination of soil, sediments, water and plants of the Caetés watershed, in Paty do Alferes, RJ, Brazil, by the use of agrochemicals, samples from two areas with different declivities (25% and 45%) were analysed, in 1996, for total contents of Cd, Co, Cu, Mn, Ni, Pb and Zn. The results for the soils under pasture (lately horticulture) showed higher heavy metals contents in comparison to the brushwood area. However, these contents didn't reach the critical levels for soils, and these elements were present in chemical forms of low disponibility for plant absorption, as it was seen in the very low levels of heavy metals in the samples of tomato (Lycopersicum esculentum L.), green pepper (Capsicum annuum L.), cabbage (Brassica oleracea L.) and cucumber (Cucumis sativus L.). The behaviour of the heavy metals in the sediment samples were the same of the soil samples, being these elements distributed, in higher percentages, in the residual, bonded to Mn and Fe oxides and bonded to organic matter fractions. The water samples from the stream and dam showed higher levels than the international standards for Cd, Pb and Mn.Com o objetivo de avaliar a contaminação do solo, sedimentos, água e plantas por metais pesados, decorrente do uso de agroquímicos, na microbacia de Caetés em Paty do Alferes, RJ, amostras de solo foram analisadas, em 1996, para obter os teores totais de Cd, Co, Cu, Mn, Ni, Pb e Zn de duas áreas com diferentes declividades (25% e 45%) tendo, ambas, como cobertura vegetal, capoeira, pasto e olericultura. Os resultados referentes aos solos sob pastagem (antiga área de olericultura) mostraram maiores teores de metais pesados do que a área de capoeira. Entretanto, esses valores não atingiram níveis críticos no solo, e esses elementos estavam presentes em formas químicas pouco disponíveis para absorção pelas plantas, como foi constatado na análise de metais pesados em tomate (Lycopersicum esculentum L.), pimentão (Capsicum annuum L.), repolho (Brassica oleracea L.) e pepino (Cucumis sativus L.), que apresentaram níveis baixíssimos desses elementos. Nas amostras de sedimentos, o comportamento dos metais pesados foi semelhante ao obtido nos solos, estando esses elementos distribuídos em maior porcentagem nas frações residual, ligadas a óxidos de Mn e Fe e ligadas à matéria orgânica. As amostras de água do córrego e do açude que cortam a microbacia apresentaram valores acima dos padrões internacionais com relação a Cd, Pb e Mn.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRamalho, Jair Felipe Gracia PereiraSobrinho, Nelson Moura Brasil do AmaralVelloso, Ary Carlos Xavier2000-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5917Pesquisa Agropecuaria Brasileira; v.35, n.7, jul. 2000; 1289-1303Pesquisa Agropecuária Brasileira; v.35, n.7, jul. 2000; 1289-13031678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5917/3021info:eu-repo/semantics/openAccess2010-08-11T19:10:23Zoai:ojs.seer.sct.embrapa.br:article/5917Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-08-11T19:10:23Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
Contaminação da microbacia de Caetés com metais pesados pelo uso de agroquímicos
title Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
spellingShingle Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
Ramalho, Jair Felipe Gracia Pereira
chemical contamination; pesticides; metallic elements; pollution; soil; sediment; water; vegetables
contaminação química; pesticidas; elementos metálicos; poluição; solo; sedimento; água; hortaliças
title_short Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
title_full Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
title_fullStr Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
title_full_unstemmed Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
title_sort Heavy metals contamination of a watershed in Caetés by the use of agrochemicals
author Ramalho, Jair Felipe Gracia Pereira
author_facet Ramalho, Jair Felipe Gracia Pereira
Sobrinho, Nelson Moura Brasil do Amaral
Velloso, Ary Carlos Xavier
author_role author
author2 Sobrinho, Nelson Moura Brasil do Amaral
Velloso, Ary Carlos Xavier
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Ramalho, Jair Felipe Gracia Pereira
Sobrinho, Nelson Moura Brasil do Amaral
Velloso, Ary Carlos Xavier
dc.subject.por.fl_str_mv chemical contamination; pesticides; metallic elements; pollution; soil; sediment; water; vegetables
contaminação química; pesticidas; elementos metálicos; poluição; solo; sedimento; água; hortaliças
topic chemical contamination; pesticides; metallic elements; pollution; soil; sediment; water; vegetables
contaminação química; pesticidas; elementos metálicos; poluição; solo; sedimento; água; hortaliças
description To evaluate heavy metals contamination of soil, sediments, water and plants of the Caetés watershed, in Paty do Alferes, RJ, Brazil, by the use of agrochemicals, samples from two areas with different declivities (25% and 45%) were analysed, in 1996, for total contents of Cd, Co, Cu, Mn, Ni, Pb and Zn. The results for the soils under pasture (lately horticulture) showed higher heavy metals contents in comparison to the brushwood area. However, these contents didn't reach the critical levels for soils, and these elements were present in chemical forms of low disponibility for plant absorption, as it was seen in the very low levels of heavy metals in the samples of tomato (Lycopersicum esculentum L.), green pepper (Capsicum annuum L.), cabbage (Brassica oleracea L.) and cucumber (Cucumis sativus L.). The behaviour of the heavy metals in the sediment samples were the same of the soil samples, being these elements distributed, in higher percentages, in the residual, bonded to Mn and Fe oxides and bonded to organic matter fractions. The water samples from the stream and dam showed higher levels than the international standards for Cd, Pb and Mn.
publishDate 2000
dc.date.none.fl_str_mv 2000-07-01
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/5917
url https://seer.sct.embrapa.br/index.php/pab/article/view/5917
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/5917/3021
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.35, n.7, jul. 2000; 1289-1303
Pesquisa Agropecuária Brasileira; v.35, n.7, jul. 2000; 1289-1303
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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