快速溶剂萃取高效液相色谱法测定蔬菜中噻虫嗪残留量

摘要

We develop a method for the determination of thiamethoxam in vegetable by accelerated sol-vent extraction-HPLC .The method includes the C18 liquid phase chromatography column ,acetonitrile/phosphate (30 :70 ,by volume)(pH≈3 .0) as the mobile phase ,and the UV detector at 263 nm .The linear correlation is 0 .99993 .Recovery rates with standard samples are 95 .24%-99 .91% .Relative standard devi-ation(RSD) is<3% .The method is rapid ,simple ,and readily applicable the rapid determination of thia-methoxam pesticide in vegetable .%建立了蔬菜中噻虫嗪残留量快速溶剂萃取高效液相色谱的分析方法。使用C18液相色谱柱，以乙腈∶磷酸溶液为流动相，对其进行了定性定量分析，方法的线性相关系数0．99993，加标回收率≥95．24％，相对标准偏差小于3％，该方法步骤简单快速，适用于蔬菜中噻虫嗪农药的快速检测。