Risk Assessment of Pesticide Residues in Agricultural Products in Cangnan Based on Food Safety Index and Hazard Risk Coefficient Methods
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Abstract:
The risks associated with pesticide residues on agricultural products cultivated in Cangnan County were assessed from 2020 to 2022. These risk assessments were performed utilizing the Index of Food Safety (IFS) and by calculating Hazard Risk Coefficients (R). Pesticide residues in 24 of the 977 samples (2.46%) exceeded the established standard. A total of 60 pesticides were detected, with detection rates >10% for 14 pesticides. The overall I(—)F(—)S of agricultural products in Cangnan is 3.83×10-2, indicating an acceptable safety level. Comprehensive evaluation suggests that enrofloxacin, 6-benzylaminopurine, 4-chlorophenoxyacetic acid sodium salt and gibberellin are associated with high risks, whereas carbendazim and bifenthrin pose moderate risks. SIC (Safe Intake of C) values were recalculated, yielding SI6-benzyladenine, SI4-chlorophenoxyacetic acid sodium salt, and SIgibberellin values for mung bean sprouts of 4.14×10-5 mg/kg•bw, whereas the SIbifenthrin for tangerine is 4.14×10-5 mg/kg•bw. The agricultural products produced in Cangnan are generally safe to consume. The safety of samples with residue levels exceeding the standard according to the IFSC results are considered unacceptable, and are subject to comprehensive assessment. Based on the maximum acceptable IFSC value (1) and pesticide residue levels on examined agricultural products, the SIC values for different agricultural products were recalculated to provide a scientific basis for quality and safety monitoring of agricultural products. Regulatory authorities need to intensify the supervision of high- and moderate-risk pesticides such as enrofloxacin, to strengthen control at points of sale and use of prohibited pesticides, including 6-benzylaminopurine, and to increase farmers’ awareness of safe pesticide use.
