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A large amount of pesticide, applied mainly during agricultural practice, is released into the atmosphere, decreasing air quality and potentially causing public health problems. The Valencian region, after Andalusia, is the Spanish region with the highest consumption of pesticides owing to its large areas of agricultural land and the existence of crops that require intensive use of pesticides. In this work, we describe the sampling and analytical tools developed in the last decade and their transference to the Regional Department for Environment, where the main objective of the research was the creation and implementation of an Air pesticide control and surveillance network (PESTNet) in the Valencian region in Spain. To be able to confirm that the established strategies were appropriate, a pilot scheme comprising three different sampling stations (two rural and one urban) was developed and implemented in 2020. The results showed that as many as 30 pesticides were detected in the three sampling stations, with the frequency detection ranging from 6% (beta-endosulfan, chlorpropham, endosulfan-sulfate, kresoxim-m, prochloraz) to 100% (azoxystrobin, chlorpyrifos-m, metalaxyl-M). On the other hand, the concentrations of the pesticides found oscillated between 14.4 (boscalid) and 4373.0 pg m−3 (chlorpyrifos-m). Moreover, a risk assessment was carried out, and no risks were observed for the studied population (infants, children, and adults) in the evaluated stations.

Methodological Aspects for the Implementation of the Air Pesticide Control and Surveillance Network (PESTNet) of the Valencian Region (Spain)