Abstract
To evaluate the occurrence and dietary risk of 18 frequently registered pesticides and 2 metabolites on cucumbers in China, a total of 360 samples (half from open field and half from greenhouse) were collected from 12 provinces, and detected using the HPLC-MS/MS combined with QuEChERS. No pesticides exceeded the MRLs in cucumber samples in open field, but isoprocarb, pyraclostrobin, abamectin, and acetamiprid in 2.8% of greenhouse cucumber samples exceeded the MRLs formulated in China. The most severely excessive pesticide was pyraclostrobin with 229% MRL. The index of quality for residues (IqR) was below 0.6 in 100% of the open field samples and 89.4% of the greenhouse samples, suggesting the cucumbers in China is qualified. The chronic, acute, and cumulative chronic dietary risks were acceptable for different consumer groups, and will not induce health risks. The results could offer a reference for formulating programs of pesticide supervision and risk management.
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