Analysis and safety evaluation of six pesticide residues in fruits and vegetables in northeast Chongqing

ObjectiveTo understand the residue status of six pesticides in fruits and vegetables in northeast Chongqing and the associated health risks to local residents.MethodsSix pesticides were detected and evaluated for safety using gas chromatography combined with the index of food safety (IFS).ResultsAmong the six pesticides, dieldrin was not detected, while the remaining five pesticides were detected. The average residual concentrations of the five pesticides in seven types of fruits and vegetables were as follows: procymidon 0.265 mg/kg, biphenthrin 0.037 mg/kg, beta-cyfluthrin 0.073 mg/kg, cypermethrin 0.060 mg/kg, and deltamethrin 0.025 mg/kg. Among all the samples, beta-cyfluthrin had the highest detection rate (25.34%), followed by procymidon (18.46%), with deltamethrin having the lowest detection rate (5.52%). The exceedance rate was highest for beta-cyfluthrin (1.00%), followed by procymidon (0.90%), while deltamethrin had the lowest exceedance rate (0.09%). The safety evaluation showed that both the single-pesticide average IFS and multiple-pesticide average IFS for the five detected pesticides were all less than 1.ConclusionThe fruit and vegetable samples sold in northeast Chongqing do not pose significant health risks to humans.