啶虫脒在食用百合中的残留、消解规律及膳食风险评估

Residue dissipation and dietary risk assessment of acetamiprid in edible lily

为明确啶虫脒在食用百合上的残留和膳食风险,采用液相色谱-质谱联用检测江苏、湖南、湖北和四川等地鲜百合和干百合中啶虫脒的残留量和消解动态,并对膳食风险进行评估。结果表明,啶虫脒在江苏和湖南食用百合上的降解半衰期分别为6.2 d和5.5 d,其消解动态符合一级反应动力学方程。最后1次药后7、10和14 d,啶虫脒在四地鲜百合和干百合中的最终残留量均小于0.01 mg/kg,低于啶虫脒在我国鲜百合和干百合中最大残留限量(MRL)0.02和0.05 mg/kg。慢性膳食暴露风险评估显示,啶虫脒对膳食风险贡献小。因此,根据推荐方式规范施药,啶虫脒在食用百合上的残留符合国家农药残留相关标准,且残留量不会对居民健康产生不利影响。

In order to determine the dietary risk of acetamiprid in edible lilies,the residual and degradation dynamics of acetamiprid in fresh and dry lilies from Jiangsu,Hunan,Hubei and Sichuan were detected by LC-MS,and the dietary risk was evaluated.The results showed that the half-lives of acetamiprid in edible lilies in Jiangsu and Hunan were 6.2 d and 5.5 d,respectively.The degradation kinetics of acetamiprid accorded to the first-order reaction kinetics equation.The final residues of acetamiprid in fresh and dried edible lilies in Hubei,Sichuan,Jiangsu and Hunan were below 0.01 mg/kg,which was lower than the maximum residue limits(MRL)of acetamiprid in fresh/dry edible lily(0.02/0.05 mg/kg).Chronic dietary exposure risk assessment showed that acetamiprid had little contribution to dietary risk.According to the recommended application method,the residual acetamiprid in edible lilies met the relevant national standards of pesticide residues,and the final residues had not adverse effects on human health.