以苯醚甲环唑和吡唑醚菌酯为例分析农药多残留联合膳食暴露风险评估方法

    Risk assessment of combined exposure to multiple pesticide residues: a case study of difenoconazole and pyraclostrobin

    • 摘要: 本研究通过欧盟推荐的农药多残留联合膳食暴露风险评估方法,对苯醚甲环唑和吡唑醚菌酯复配剂在苹果上施用后的联合膳食暴露风险进行了评估,旨在明确欧盟的农药多残留联合膳食暴露风险评估方法的适用性。结果表明:对普通人群而言,苯醚甲环唑及吡唑醚菌酯单一农药的长期膳食暴露风险商分别为26.0%和19.7%,短期膳食暴露风险商分别为2.5%和0.5%;长期联合膳食暴露风险商为31.4%,短期联合膳食暴露风险商为6.4%。对于2~4岁儿童群体,单一农药长期膳食暴露风险商 (取男女平均值) 分别为56.0%和40.0%,短期膳食暴露风险商分别为8.7%和1.7%;长期联合膳食暴露风险商为66.9%,短期联合膳食暴露风险商为22.4%,全部风险评估的结果均在可接受水平范围内。进一步讨论了影响评估结果的不确定性因素,认为通过必要的途径提高农药残留数据和膳食消费数据的质量,有助于使评估结果更准确。

       

      Abstract: By evaluating the combined dietary exposure risk of difenoconazole and pyraclostrobin on apple, the applicability of the combined exposure risk assessment method for multiple pesticide residues recommended by the European Union was investigated. The results showed that for the general population, the chronic dietary exposure risk quotient (cRQs) of difenoconazole and pyraclostrobin were 26.0% and 19.7%, and the acute dietary exposure risk quotient (aRQs) were 2.5% and 0.5%, respectively. The combined chronic cumulative exposure risk quotient was 31.4%, and the combined acute cumulative dietary exposure risk quotient was 6.4%. For the children group, the cRQs of difenoconazole and pyraclostrobin (average of males and females) were 56.0% and 40.0%, and the aRQs were 8.7% and 1.7%, respectively. The combined risk quotient of chronic cumulative dietary exposure was 66.9%, and the combined acute cumulative dietary exposure risk quotient was 22.4%. All dietary risk assessment values were within the acceptable limits. The study further analyzed the uncertainties influencing the assessment outcomes, suggesting that refining the quality of pesticide residue data and food consumption survey data would significantly enhance the reliability of the risk assessment results.

       

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