高效液相色谱法测定阿维菌素在枸杞果实中的残留动态

采用高效液相色谱法研究了1.8%阿维菌素乳油在枸杞果实内的残留动态和最终残留量。结果表明,阿维菌素在枸杞果实内消解较快,在6和12 m g/L浓度下,施药后7 d枸杞果实内的阿维菌素残留分别为0.008和0.010 m g/kg,7 d后均未检出阿维菌素残留,半衰期为1.34~1.50 d,在使用推荐浓度6 m g/L、施药2次的情况下,最后一次施药7 d后,在枸杞果实内未检出阿维菌素,说明阿维菌素在推荐剂量下使用对枸杞果实的食用是安全的。

Residues of abamectin in wolfberry by HPLC

The studies on the final residue and dynamic degradation of 1.8% abamectin EC in wolfberry were carried out by HPLC.and the results showed that abamectin dissipated rapidly in wolfberry fruit.Spraying at 6 and 12 mg/L with an interval of 7 d,the residue was 0.008 and 0.010 mg/kg in wolfberry fruit,the half life of Abamectin in wolfberry fruit was 1.34-1.50 d.and abamectin was not defected after 7 d of last spray at dilution of 6 mg/L.Thus,this pesticide is safe when applied on wolfberry fruit at recommended rates.