Pesticide Residue Analysis and Dietary Risk Assessment of Watermelon in Different Habitats
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Abstract:
To clarify the status of pesticide residues in different regions’ watermelons and distinguish the differences of pesticide residues, 80 samples of watermelons from Xingjiang, Shangdong and Guangxi were selected to indentify 60 kinds of pesiticide residue levels. Then, based on the vaterinary drug residue risk ranking method of the committee on veterinary drugs. Safety levels, the pesticide residues of watermelons from three places were assessed by risk assessment for acute and chronic dietary intake. The results showed that 11 kinds of pesticide residues were detected in the three producing areas and the types of pesticide residues were 6, 7, 8 in Xinjiang, Shandong, and Guangxi watermelons, respectively. The residue levels and the pesticide risk scores were all different. Pesticides triazophos, dichlorvos, prochloraz, anisole (24.60, 24.60, 18.30, 18.15) in Guangxi, pesticides anisole and trimethoprim (18.50, 18.10) in Shandong, and pesticides Phenylfenazol (18.20) in Xinjiang had relatively high risk scores. Acute and chronic dietary risk of the detected pesticides showed that the percentages of ADI and ARfD of all pesticide residues in watermelon ranged between 0.01% and 1.53%, 0.03% and 23.30%, respectively, which were far less than 100%. The pesticide residue types, residue levels and risk scores that detected in the three regions were different, and attention should be paid to the corresponding pesticides in the production area, although the levels of pesticide residues fall within the safety limit.
