Abstract
Chlorpyrifos (O, O-diethyl-O-(3,5,6-trichloro-2-pyridyl) phosphorothioate) is a broad-spectrum organophosphate insecticide and acaricide, widely used in our country. Nowadays, it is the principal insecticide in the market employed for agricultural purposes. A number of studies tending to study the affinity of different pesticides with soil have been performed, but only a few refer to chlorpyrifos. Because of its intensive use, a wide range of terrestrial ecosystems may be contaminated with chlorpyrifos, and there is a need to evaluate its environmental behavior and effects. The aim of our work is to study the interaction and persistence of a commercial formulation of chlorpyrifos on an agricultural soil from Provincia de Buenos Aires, Argentina. In this case, recovery percentages increased with the increase of initial concentration of the pesticide until a concentration of about 25 ppm is reached, and then a decrease was observed. The half-time life was not affected by an increase in chlorpyrifos concentration.
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Acknowledgments
We are indebted to CONICET (Consejo Nacional de Investigaciones Científicas y Técnicas) and Universidad de Buenos Aires for financial support. We thank the Department of Soils of the Faculty of Agronomics, University of Buenos Aires for the chemical characterization of solid matrices.
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Álvarez, M., du Mortier, C., Sokolic, T. et al. Studies on the Persistence of a Commercial Formulation of Chlorpyrifos on an Agricultural Soil from Provincia de Buenos Aires, República Argentina. Water Air Soil Pollut 224, 1571 (2013). https://doi.org/10.1007/s11270-013-1571-8
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DOI: https://doi.org/10.1007/s11270-013-1571-8