New pesticides and the drinking water standards:
environmental fate and health risks
Keywords:
Dinotefuran, Florpyrauxifen-benzyl, Fluopyram, SulfoxaflorAbstract
Pesticides are widely used in Brazil. Once in the environment, they can contaminate the air, the water and the soil, and they may cause harm to human health. With the recurrent approval of many registers of pesticides in Brazil, the aim of this paper is to evaluate the environmental dynamic and the toxicity of the active ingredients of pesticides that had their records approved from January 2018 to December 2019, along with a suggestion of possible guideline values for the equivalent concentration in Brazilian drinking water. Of the 15 compounds that were approved in the period, were selected only the chemical compounds (Dinotefuran, Florpyrauxifen-benzyl, Fluopyram, Sulfoxaflor), excipient ones and microbiological agents were excluded. Dinotefuran and Fluopyram stood out for presenting high toxicity and environmental persistence, which may indicate the possibility of exposure of human beings to high levels of these pesticides by water consumption. Sulfoxaflor, on the other hand, despite having unfavorable environmental dynamics to the contamination of water sources, requires monitoring of its occurrence in water supply systems, due to its high toxicity. Finally, Florpyrauxifen-benzyl has not shown evident risk that justifies its monitoring in water sources.
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