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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
22/05/2007 |
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Data da última atualização: |
28/09/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CERDEIRA, A. L.; SANTOS, N. A. G.; PESSOA, M. C. P. Y.; GOMES, M. A. F.; LANCHOTE, V. L. |
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Afiliação: |
ANTONIO LUIZ CERDEIRA, CNPMA; Neife A G. dos Santos, Pharmacy School of São Paulo University, USP, Ribeirão Preto, São Paulo; MARIA CONCEICAO PERES YOUNG PESSOA, CNPMA; MARCO ANTONIO FERREIRA GOMES, CNPMA; Vera L. Lanchote, Pharmacy School of São Paulo University, USP, Ribeirão Preto, São Paulo. |
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Título: |
Herbicide leaching on a recharge area of the Guarany Aquifer in Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Journal of Environmental Science and Health. Part B, Pesticides, Food Contaminants, and Agricultural Wastes, New York, v. B40, n. 1, p. 159-165, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
The region of Ribeirao Preto City, located in Southeast of Brazil, Sao Paulo State, is an important sugarcane, soybean, and corn producing area with a high level of pesticides utilization. This region is also an important recharge area for groundwater supply of the Guarany Aquifer. Since the past ten years atrazine, simazine, ametryn, tebuthiuron, diuron, 2,4-D, picloram, and hexazinone are the main herbicides used in this area. In order to study a possible leaching of some of these herbicides into the aquifer, surface, and groundwater samples were collected in a watershed during the years of 1996 to 2003, from different locations. To detect and quantify the herbicides a GC-MS (gas chromatograph/mass spectrometry) method was used. The response of the herbicides analyzed was linear over the concentration range of 0.02 to 2.0 microg/L. Analysis of groundwater revealed that the herbicides tebuthiuron, diuron, atrazine, simazine, and ametryn were not present in the samples. In the surface water collected in 1997, ametryn was present in two out of nine locations with concentrations ranging from 0.17 and 0.23 microg/L, which is above the allowable 0.1 microg/L according to the European safety level. The leaching potential of tebuthiuron, diuron, atrazine, simazine, 2,4-D, picloram, and hexazinone has been evaluated using CMLS-94, "Chemical Movement in Layered Soil," as simulation model. No leaching into the depth of the water table at 40 m was found. |
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Palavras-Chave: |
Ametrina; Aqüífero Guarani; Ribeirão Preto; São Paulo (estado); Simazina; Tebutiuron. |
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Thesagro: |
Águas subterrâneas; Análise química; Atrazina; Cana de açúcar; Herbicida; Milho; Modelo de simulação; Poluição da água; Soja. |
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Thesaurus Nal: |
diuron; hexazinone; picloram. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02598naa a2200385 a 4500
001 1015445
005 2015-09-28
008 2005 bl uuuu u00u1 u #d
100 1 $aCERDEIRA, A. L.
245 $aHerbicide leaching on a recharge area of the Guarany Aquifer in Brazil.$h[electronic resource]
260 $c2005
520 $aThe region of Ribeirao Preto City, located in Southeast of Brazil, Sao Paulo State, is an important sugarcane, soybean, and corn producing area with a high level of pesticides utilization. This region is also an important recharge area for groundwater supply of the Guarany Aquifer. Since the past ten years atrazine, simazine, ametryn, tebuthiuron, diuron, 2,4-D, picloram, and hexazinone are the main herbicides used in this area. In order to study a possible leaching of some of these herbicides into the aquifer, surface, and groundwater samples were collected in a watershed during the years of 1996 to 2003, from different locations. To detect and quantify the herbicides a GC-MS (gas chromatograph/mass spectrometry) method was used. The response of the herbicides analyzed was linear over the concentration range of 0.02 to 2.0 microg/L. Analysis of groundwater revealed that the herbicides tebuthiuron, diuron, atrazine, simazine, and ametryn were not present in the samples. In the surface water collected in 1997, ametryn was present in two out of nine locations with concentrations ranging from 0.17 and 0.23 microg/L, which is above the allowable 0.1 microg/L according to the European safety level. The leaching potential of tebuthiuron, diuron, atrazine, simazine, 2,4-D, picloram, and hexazinone has been evaluated using CMLS-94, "Chemical Movement in Layered Soil," as simulation model. No leaching into the depth of the water table at 40 m was found.
650 $adiuron
650 $ahexazinone
650 $apicloram
650 $aÁguas subterrâneas
650 $aAnálise química
650 $aAtrazina
650 $aCana de açúcar
650 $aHerbicida
650 $aMilho
650 $aModelo de simulação
650 $aPoluição da água
650 $aSoja
653 $aAmetrina
653 $aAqüífero Guarani
653 $aRibeirão Preto
653 $aSão Paulo (estado)
653 $aSimazina
653 $aTebutiuron
700 1 $aSANTOS, N. A. G.
700 1 $aPESSOA, M. C. P. Y.
700 1 $aGOMES, M. A. F.
700 1 $aLANCHOTE, V. L.
773 $tJournal of Environmental Science and Health. Part B, Pesticides, Food Contaminants, and Agricultural Wastes, New York$gv. B40, n. 1, p. 159-165, 2005.
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