Dissipation of DDT in a heavily contaminated soil in Mato Grosso, Brazil

Página do item simplificado
dc.contributor.authorDalla Villa, Ricardo [UNESP]
dc.contributor.authorde Carvalho Dores, Eliana Freire Gaspar
dc.contributor.authorCarbo, Leandro
dc.contributor.authorCunha, Marcelo Luiz Ferreira
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Mato Grosso
dc.date.accessioned2014-05-27T11:21:53Z
dc.date.available2014-05-27T11:21:53Z
dc.date.issued2006-07-01
dc.description.abstractAfter the prohibition of organochlorine-pesticide use in Brazil for controlling insect vector diseases, Mato Grosso State gathered the exceeding DDT and stored it irregularly in an open air area that belongs to the National Health Foundation, causing soil contamination. This study aimed to evaluate the contamination level and dissipation of p,p′-DDT and p,p′-DDE in this area. For that, surface soil samples were collected on 19 September 2000, 15 December 2000, 4 April 2001 and soil samples 30-40 cm; 60-70 cm and 90-100 cm deep were taken from five points in the studied area on 17 July 2001. The contaminants were determined by a small scale method which consists on extraction and clean-up steps combined into one step by transferring soil samples mixed with neutral alumina to a chromatographic column prepacked with neutral alumina and elution with hexane:dichloromethane (7:3 v:v). The eluate was concentrated and the analytes were quantified by gas chromatography with an electron-capture detector. p,p′-DDT at surface soil ranged from 3800 to 7300 mg kg -1. 30-40 cm deep soil sample concentrations varied from 0.036 to 440 mg kg -1 while 90-100 cm deep samples varied from 0.069 to 180 mg kg -1. Volatilization is probably the main dissipation process. The p,p′-DDT is moving slowly downward in the soil profile, however, the levels of this contaminant are high enough to present risk to underground waters. © 2005 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP-São Paulo State University-Institute of Chemistry, 14801-970, P.O. Box 355, Araraquara, SP
dc.description.affiliationDepartamento de Química Universidade Federal do Mato Grosso, 78060-900 Cuiabá, MT
dc.description.affiliationUnespUNESP-São Paulo State University-Institute of Chemistry, 14801-970, P.O. Box 355, Araraquara, SP
dc.format.extent549-554
dc.identifierhttp://dx.doi.org/10.1016/j.chemosphere.2005.11.019
dc.identifier.citationChemosphere, v. 64, n. 4, p. 549-554, 2006.
dc.identifier.doi10.1016/j.chemosphere.2005.11.019
dc.identifier.issn0045-6535
dc.identifier.scopus2-s2.0-33745261548
dc.identifier.urihttp://hdl.handle.net/11449/68936
dc.language.isoeng
dc.relation.ispartofChemosphere
dc.relation.ispartofjcr4.427
dc.relation.ispartofsjr1,435
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectContamination
dc.subjectDissipation
dc.subjectOrganochlorine
dc.subjectp,p′-DDT
dc.subjectSoil
dc.subjectDiseases
dc.subjectExtraction
dc.subjectGas chromatography
dc.subjectPesticides
dc.subjectSoils
dc.subjectOrganochlorines
dc.subjectP,p′-DDT
dc.subjectSoil profile
dc.subjectSoil pollution
dc.subjectaluminum oxide
dc.subjectchlorphenotane
dc.subjectdichloromethane
dc.subjecthexane
dc.subjectorganochlorine derivative
dc.subjectchemical pollutant
dc.subjectDDT
dc.subjectdissipation
dc.subjectgas chromatography
dc.subjectpesticide application
dc.subjectsoil degradation
dc.subjectvolatilization
dc.subjectBrazil
dc.subjectelectron capture detection
dc.subjectextraction
dc.subjectrisk factor
dc.subjectsample
dc.subjectsoil
dc.subjectsoil pollution
dc.subjecttime series analysis
dc.subjectEnvironmental Monitoring
dc.subjectSoil Pollutants
dc.subjectMato Grosso
dc.subjectSouth America
dc.subjectInsecta
dc.titleDissipation of DDT in a heavily contaminated soil in Mato Grosso, Brazilen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy

Arquivos

Coleções

Artigos