• DOI:10.1021/acs.jafc.5b04508
• Corpus ID: 23742238

Environmental Behavior of Chlorpyrifos and Endosulfan in a Tropical Soil in Central Brazil.

@article{Dores2016EnvironmentalBO,
  title={Environmental Behavior of Chlorpyrifos and Endosulfan in a Tropical Soil in Central Brazil.},
  author={Eliana Freire Gaspar DE Carvalho Dores and Claudio A. Spadotto and Oscarlina L{\'u}cia dos Santos Weber and Ricardo Dalla Villa and Ant{\^o}nio Brandt Vecchiato and Alicio A. Pinto},
  journal={Journal of agricultural and food chemistry},
  year={2016},
  volume={64 20},
  pages={
          3942-8
        }
}

• E. Dores, Claudio A. Spadotto, +3 authors A. Pinto
• Published 25 May 2016
• Environmental Science, Medicine
• Journal of agricultural and food chemistry

The environmental behavior of chlorpyrifos and endosulfan in soil was studied in the central-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.