Analysis of exposure to pesticide residues from Traditional Chinese Medicine

农药残留 杀虫剂 探索者 毒理 危险系数 多菌灵 化学 环境化学 重金属 生物 杀菌剂 植物 农学
作者
Jinjing Xiao,Xing Xu,Fan Wang,Jinjuan Ma,Min Liao,Yanhong Shi,Qingkui Fang,Haiqun Cao
出处
期刊:Journal of Hazardous Materials [Elsevier BV]
卷期号:365: 857-867 被引量:130
标识
DOI:10.1016/j.jhazmat.2018.11.075
摘要

The safety of Traditional Chinese Medicine (TCM) is of concern worldwide. Herein, Paeoniae Radix Alba, Chaenomelis Fructus and Moutan Cortex, representing three medicinal components, were subjected to toxicological analysis to investigate possible pesticide contamination. Exposure using a point estimate model identified 47 residues that were simultaneously validated by the QuEChERS-UPLC-MS/MS method, which is sufficiently reliable for measuring residue concentrations. Of the 313 samples tested, 94.57% contained pesticide residues, with concentrations ranging from 0.10 to 1199.84 μg kg-1, of which >83.17% contained 4-15 different residues. Carbendazim was the most frequently detected pesticide (>85%), and procymidone, pendimethalin and phoxim were also abundant (median concentration = 15.33-623.12 μg kg-1). Risk assessment based on the hazard quotient/hazard index (HQ/HI) approach revealed that exposure to pesticide residues in all three TCMs (95th percentile) were far below levels that might pose a health risk. However, insecticides contributed to cumulative exposure, especially phoxim, and worryingly, several banned pesticides were detected. The results are of theoretical and practical value for evaluating the safety TCMs, and could improve their quality and safety.
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