Data/hora: 24/06/2024 13:04:57

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 14/01/2008
Data da última atualização: | 28/03/2014
Autoria: | CARBO, L.; MARTINS, E. L.; DORES, E. F. G. C.; SPADOTTO, C. A.; WEBER, O. L. S.; DE-LAMONICA-FREIRE, E. M.
Afiliação: | Leandro Carbo, LARB-UFMT; Eucarlos de Lima Martins, Laboratório de Análises de Resíduos de Biocidas-UFMT; Eliana F. G. C. Dores, LARB-UFMT; Cláudio Aparecido Spadotto, Embrapa Meio Ambiente; Oscarlina Lúcia dos Santos Weber, FAMEV-UFMT; Ermelinda M. De-Lamonica-Freire, UNIVAG.
Título: | Acetamiprid, carbendazim, diuron and thiamethoxam sorption in two Brazilian tropical soils.
Ano de publicação: | 2007
Fonte/Imprenta: | Journal of Environmental Science and Health. Part B. Pesticides, Food Contaminants and Agricultural Wastes, New Yrok, v. 42, n. 5, p. 499-507, 2007.
Idioma: | Inglês
Conteúdo: | Sorption of acetamiprid (E)-N1-[(6-chloro-3-pyridyl)methyl]-N2-cyano-N1-methylacetamidine), carbendazim (methyl benzimidazol-2-ylcarbamate), diuron (N-(3,4-dichlorophenyl)-N, N-dimethyl urea) and thiamethoxam (3-(2-chloro-thiazol-5-ylmethyl)-5-methyl-[1,3,5]oxadiazinan-4-ylidene-N-nitroamine) was evaluated in two Brazilian tropical soils, Oxisol and Entisol, from Primavera do Leste region, Mato Grosso State, Brazil. To describe the sorption process, batch experiments were carried out. Linear and Freundlich isotherm models were used to calculate the Kd and Kf coefficients from experimental data. The Kd values were utilized to calculate the partition coefficient normalized to soil organic carbon (Koc). For the pesticides acetamiprid, carbendazim, diuron and thiamenthoxan the Koc (mL g- 1) values ranged in both soils from 98 - 3235, 1024 - 2644, 145 - 2631 and 104 - 2877, respectively. From the studied pesticides, only carbendazim presented correlation (r2 = 0.82 and p < 0.01) with soil organic carbon (OC) content. Acetamiprid and thiamethoxam showed low sorption coefficients, representing a high risk of surface and ground water contamination.
Palavras-Chave: | Brasil; Contaminação do solo; Mato Grosso.
Thesagro: | Agrotóxico; Poluição da Água; Solo Tropical; Sorção.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/100280/1/2007AP-058.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (7159-1) - UPC - AP - -- - Aq5 G2 - PAT 2007 - 2008.00013 - DIS