Environmental health risk assessment of chlorpyrifos near a pesticide enterprise in East China

This study presents the results of an environment investigation and monitoring of chlorpyrifos contamination in the vicinity of a pesticide enterprise in East China, focusing on its relation to environmental and human health risks. The impact zone of chlorpyrifos is particularly pronounced within approximately 2 km of the enterprise. The highest levels of outdoor dust were observed in SP1, which is closest to the enterprise. The individual health risk of exposure to chlorpyrifos through different media – such as indoor air, rice, vegetables, drinking water and indoor dust – was assessed following the procedure defined by the USEPA. The non-carcinogenic risks to both adults and children do not exceed the permissible standard of 1, suggesting no non-carcinogenic risks due to chlorpyrifos exposure. However, the average daily dose calculated by exposure assessment model shows that children are exposed to higher doses of chlorpyrifos compared to adults due to their lifestyle habits and play patterns.