엉겅퀴 중 살충제 Etofenprox 및 Deltamethrin의 잔류특성 및 위해성 평가

Abstract

The increase in pesticide use for agricultural production may affect consumer health due to pesticide residues in crops. Consequently, many countries have established maximum residue limits (MRLs) for pesticides. This study evaluated the characteristics of residues and conducted a risk assessment of etofenprox and deltamethrin in Cirsium japonicum spinosissimum. The residue levels of the two pesticides ranged from 0.99 to 8.07 mg/kg and 0.03 to 0.71 mg/kg, with half-lives of 5.0 days and 3.5 days. The risk assessment based on the highest exposure scenario (99th percentile) indicated hazard index (HI) values of 0.369 and 0.097, suggesting a low-level risk (HI <1). Considering actual intake scenarios within the agricultural environment, risk assessments were conducted for treated plots at 3, 7, and 14 days after pesticide application. The results showed that the pesticide exposure risk decreased less than 0.1 at 7 and 0 days after treatment compared to the harvest day (etofenprox, deltamethrin HI = 0.090, 0.097). From this research, it was suggested that for safety standards regarding pesticide use, etofenprox should be applied twice as a foliar spray at least 7 days before harvest, while deltamethrin should be no later than 3 days before harvest.