Data/hora: 17/06/2024 18:02:19

Biblioteca(s): | Embrapa Territorial.
Data corrente: | 07/12/2016
Data da última atualização: | 26/09/2022
Autoria: | DORES, E. F. G. C.; SPADOTTO, C. A.; WEBER, O. L. S.; VILLA, R. D.; VECCHIATO, A. B.; PINTO, A. A.
Afiliação: | UNIVERSIDADE FEDERAL DE MATO GROSSO; CLAUDIO APARECIDO SPADOTTO, SGTE; UNIVERSIDADE FEDERAL DE MATO GROSSO; UNIVERSIDADE FEDERAL DE MATO GROSSO; UNIVERSIDADE FEDERAL DE MATO GROSSO; UNIVERSIDADE FEDERAL DE MATO GROSSO.
Título: | Environmental Behavior of Chlorpyrifos and endosulfan in a tropical soil in central Brazil.
Ano de publicação: | 2016
Fonte/Imprenta: | Journal of Agricultural and Food Chemistry, v. 64, n. 20, 2016.
Páginas: | 7 p.
DOI: | 10.1021/acs.jafc.5b04508
Idioma: | Inglês
Conteúdo: | The environmental behavior of chlorpyrifos and endosulfan in soil was studied in the central&#8722;western region of Brazil by means of a field experiment. Sorption was evaluated in laboratory batch experiments. Chlorpyrifos and endosulfan were applied to experimental plots on uncultivated soil and the following processes were studied: leaching, runoff, and dissipation in top soil. Field dissipation of chlorpyrifos and endosulfan was more rapid than reported in temperate climates. Despite the high Koc of the studied pesticides, the two endosulfan isomers and endosulfan sulfate as well as chlorpyrifos were detected in percolated water. In runoff water and sediment, both endosulfan isomers and endosulfan sulfate were detected throughout the period of study. Observed losses of endosulfan by leaching (below a depth of 50 cm) and runoff were 0.0013 and 1.04% of the applied amount, whereas chlorpyrifos losses were 0.003 and 0.032%, respectively. Leaching of these highly adsorbed pesticides was attributed to preferential flow.
Palavras-Chave: | Dissipation; Water contamination.
Thesaurus Nal: | leaching; pesticides; runoff; sorption.
Categoria do assunto: | --
Registro original: | Embrapa Territorial (CNPM)
Exemplares: | CNPM - (5792-1) - UPC - AP - DD -  -  -  - DIS