陕西省主要叶菜中有机磷农药残留的膳食暴露风险评估

发布时间：2018-08-13 16:46

【摘要】：目的为探讨陕西省主要叶菜中有机磷农药的膳食暴露风险。方法充分考虑陕西省地域特征,采集472份叶类蔬菜,检测27种有机磷农药。采用国内理论最大膳食摄入(National Theoretical Maximum Daily Intake,NTMDI)法对陕西省叶菜中有机磷进行膳食暴露评估。结果 472份叶菜的检出率为9.96%,超标率为0.42%。总共检出12中有机磷农药,未检出结果以1/2LOD计算,陕西省主要叶菜中有机磷的接触风险指数(Expose Risk Index,ERI)在2.50E-06~3.35E-01之间,其中茼蒿和菜心中的甲拌磷的ERI最高,均为3.35E-01;其次是香菜中氧化乐果的ERI为3.08E-02;油麦菜中氧化乐果的ERI为3.03E-02。陕西省叶菜中有机磷的膳食暴露风险方面,其中菠菜中乐果的风险指数(Relative Index,RI)100%,其他各种有机磷的RI均100%,叶菜中有机磷的膳食暴露量在1.55E-03μg/kg bw/d~3.28E-02μg/kg bw/d范围之间。结论乐果的风险指数不可接受,其余各种有机磷的风险指数均可接受;陕西省叶菜中有机磷的膳食暴露量是安全的,提示乐果为重点监管对象。
[Abstract]:Objective to study the dietary exposure risk of organophosphorus pesticides in main leafy vegetables in Shaanxi Province. Methods 472 leaf vegetables were collected and 27 organophosphorus pesticides were detected. The dietary exposure of organophosphorus in leafy vegetables of Shaanxi Province was evaluated by using the domestic theoretical maximum dietary intake of (National Theoretical Maximum Daily Intaka NTMDI. Results the detection rate of 472 leaf vegetables was 9.96 and the rate of exceeding the standard was 0.42. A total of 12 organophosphorus pesticides were detected. The exposure risk index (Expose Risk index) of organophosphorus in main leafy vegetables of Shaanxi Province was between 2.50E-06~3.35E-01, and the ERI of chrysanthemum and chrysanthemum was the highest. The ERI of dimethoate in coriander was 3.08E-02and the ERI of dimethoate was 3.03E-02in cereals. The dietary exposure risk of organophosphorus in leafy vegetables of Shaanxi Province was 100% for dimethoate in spinach, 100 for other organophosphorus, and 100 for organic phosphorus. The dietary exposure of organic phosphorus in leafy vegetables was in the range of 1.55E-03 渭 g/kg bw/d~3.28E-02 渭 g/kg bw/d. Conclusion the risk index of dimethoate is not acceptable, and the risk index of other organophosphorus is acceptable, and the dietary exposure of organic phosphorus in leaves of Shaanxi Province is safe, suggesting that dimethoate is the focus of supervision.
【作者单位】：陕西省疾病预防控制中心;
【分类号】：R155.5

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