Abstract:

According to the method of Joint FAO/WHO Meeting on Pesticide Residues (JMPR), a risk assessment modelwas established based on the data of pesticide residues in vegetables marketed in Pingliang city, Gansu province during2004—2012 by Monte Carlo simulation with a risk analysis software to estimate the risk of dietary exposure to pesticideresidues exceeding the maximum residual limits (MRLs). The results showed that of 1 273 samples from 26 varieties ofvegetables tested, 6 vegetable varieties contained three kinds of pesticide residues which posed a health risk to consumers, witha risk possibility of 27.0% and 22.5% for dichlorvos and acephate in cabbage, respectively, 32.0% for dichlorvos in Chinesecabbage, and 29.4%, 0.4%, 0.8% and 16.7% for permethrin in celery, Chinese cabbage, tomato and cucumber, respectively.Thus, supervision should be strengthened due to the relatively high risk of dietary exposure to pesticide residues in somevegetables marketed in Pingliang city.

Key words: pesticide residues, Monte Carlo, risk assessment