Residue levels and cumulative acute risk assessment of pesticides in apples of main fruits area in Shandong province

Objective To assess the levels of pesticide residues and provide scientific basis for regulation of pesticide residues in major apple producing areas in Shandong province. Methods Residues of 102 pesticides in 110 apples from main fruits areas were detected by standard methods The method of cumulative acute risk assessment of pesticide in apple was established by acute reference dose(ARf D) and international estimated short-term intake(IESTI). Results Many types of pesticide residues(26 kinds) were detected in apples. Multiple residues(2 kinds of pesticides and above) accounted for a higher sample proportion of the total number of samples(78%). All pesticide residues detected in the samples did not exceed the maximum residue limit(MRL). Banned methomyl and unregistered buprofezin, spirodiclofen, and triflumuron pesticides were detected. The values of accumulation acute risk of organophosphate, pyrethroid, triazoles and neonicotinoid pesticides were 37.7%, 7.37%, 0.28% and 1.53%. Conclusion Many types of pesticides residue were detected, but the levels were not high. Organophosphate and pyrethroid, triazoles and neonicotinoid pesticides accumulate less risk of acute dietary intake of apples in Shandong, and the likelihood of harm is unlikely. The banned pesticides and unregistered pesticides are needed to focus on.