Data/hora: 24/05/2024 03:29:22

Biblioteca(s): 	Embrapa Meio Ambiente.	
Data corrente: 	04/10/2006	
Data da última atualização: 	07/01/2019	
Autoria: 	SPADOTTO, C. A.; HORNSBY, A. G.	
Afiliação: 	CLAUDIO APARECIDO SPADOTTO, SGTE; A. G. HORNSBY, Soil and Water Science Dep., Univ. of Florida.	
Título: 	Organic compounds in the environment: soil sorption of acidic pesticides: modeling pH effects.	
Ano de publicação: 	2003	
Fonte/Imprenta: 	Journal of Environmental Quality, Madison, v. 32, p. 949-956, 2003.	
Idioma: 	Inglês	
Conteúdo: 	A 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	
Thesagro: 	Agrotóxico; Modelo de simulação; Ph; Sorção.	
Categoria do assunto: 	W Química e Física	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/163848/1/Spadotto-Organic-6443.pdf	
Registro original: 	Embrapa Meio Ambiente (CNPMA)	
Exemplares: 	CNPMA - (6443-1) - UPC - AP - DD -  -  - 2006.00020 - DIS