Organic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects.

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dc.contributorCLAUDIO APARECIDO SPADOTTO, SGTE
dc.contributorA. G. HORNSBY, Soil and Water Science Dep., Univ. of Florida.
dc.creatorSPADOTTO, C. A.
dc.creatorHORNSBY, A. G.
dc.date2017-09-19T00:13:07Z
dc.date2017-09-19T00:13:07Z
dc.date2006-10-04
dc.date2003
dc.date2019-01-07T11:11:11Z
dc.date.accessioned2026-07-07T05:04:46Z
dc.descriptionA model of acidic pesticide sorption in soils was developed from theoretical modeling and experimental data, which initially considered a combination of a strongly acidic pesticide and a variable-charge soil with high clay content. Contribution of 2,4-D [(2,4-dichlorophenoxy) acetic acid] anionic-form sorption was small when compared with molecular sorption. Dissociation of 2,4-D was not sufficient to explain the variation in Kd as a function of pH. Accessibility of soil organic functional groups able to interact with the pesticide (conformational changes) as a function of organic matter dissociation was proposed to explain the observed differences in sorption. Experimental 2,4-D sorption data and Koc values from literature for flumetsulam [N-(2,6-difluorophenyl)-5-methyl [1,2,4] triazolo [1,5-a] pyrimidine-2-sulfonamide] and sulfentrazone
dc.identifierJournal of Environmental Quality, Madison, v. 32, p. 949-956, 2003.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/15098
dc.identifier.urihttp://hdl.handle.net/123456789/479604
dc.languageeng
dc.rightsopenAccess
dc.subjectSorção
dc.subjectModelo de simulação
dc.subjectAgrotóxico
dc.subjectPh
dc.titleOrganic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects.
dc.typeArtigo de periódico

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