Objective: A comparative risk evaluation of contamination of the soil and groundwater with fungicides, insecticides and herbicides, and risk assessment of the adverse effects of these substances on human health while contaminated groundwater consumption.
Methodology: Field hygienic experiments with studied pesticides were carried out in different soil and climatic zones. Prediction of pesticides migration possibility in groundwater was carried out by Groundwater ubiquity score (GUS) and Leaching potential index (LEACH). For integrated assessment of the potential hazard of pesticide exposure on the human organism when it enters ground and surface waters we used integral groundwater contamination index (IGCHI).
Results: Among fungicides, the most resistant were triazoles, herbicides oxyacetamide flufenacet and all studied insecticides. There was a significant difference between the maximum and minimum DT50 values, in some cases the difference reaches more than 10 times. The evaluation of GUS index showed that risk of leaching into groundwater of fungicides based on paclobutrazol, herbicides based on metribuzin, insecticides based on thiamethoxam during application in soil and climatic conditions of Ukraine is a high (probably leached).
Conclusion: The maximum possible concentration of studied groups pesticides in groundwater was significantly lower than allowable, which is associated primarily with low application rates and indicates the relative safety for human health when consuming water, which could be contaminated with test compounds.
Key words: Groundwater, fungicides, insecticides, herbicides, risk, forecasting, health
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