葡萄中几种常用防治绿盲蝽农药的残留动态与风险评估

Residue dynamics and risk assessment of several pesticides commonly used for the control of Apolygus lucorum in grapes

为探明葡萄中常用的几种防治绿盲蝽农药的残留规律和膳食风险,开展3种常用农药甲氨基阿维菌素苯甲酸盐(甲维盐)、噻虫嗪和啶虫脒在葡萄中的残留动态及膳食风险研究。结果表明,甲维盐、噻虫嗪、啶虫脒在葡萄中的降解均符合一级动力学方程,且使用14 d后均可降解至农药最高残留限量(MRL)值以下。3种农药在降解14 d的残留量的膳食风险评估结果表明,3种农药的慢性风险、急性风险和全膳食风险均小于100%,说明按照推荐的使用方法所选3种试验农药使用14 d后膳食风险较低,可以推荐用于绿盲蝽的防治,推荐安全间隔期为14 d。

To clarify the residues and dietary risks of several pesticides commonly used for the control of Apolygus lucorum in grapes,studies were carried out on three common pesticides:emamectinbenzoate,thiamethoxam and acetamiprid.The results showed that the degradation of these three pesticides in grape were in accordance with the first-order kinetic equation,and could degrade to below the maximum residue level(MRL)value after 14 days.Three kinds of pesticide residues in degradation of 14 days dietary risk assessment results showed that the three kinds of pesticide risk of chronic and acute risk and total dietary risk was less than 100%,which indicated that according to the recommended use method,the dietary risk of these three test pesticides was low after 14 days,and could be recommended for control Apolygus lucorum and the recommended security clearances was 14 days.