气相色谱法测定水果和蔬菜中嘧霉胺·氟硅唑·抑霉唑残留量

Determination of Pyrimethanil,Flusilazole,Imazalil Pesticide Multiresidues in Fruit and Vegetable Foods by GC

介绍了应用配有FTD/NPD/检测器的气相色谱仪测定水果和蔬菜中嘧霉胺、氟硅唑、抑霉唑残留量的方法。样品用乙酸乙酯提取,经过硅胶柱净化,旋蒸定容后上机。以GC-FTD(NPD)测定,外标法定量。嘧霉胺、氟硅唑、抑霉唑分别在一定范围内,质量浓度与峰高(峰面积)呈良好的线性关系。方法准确,重现性、精密度好,杂质干扰少。方法检出限嘧霉胺0.005mg/kg,氟硅唑0.01mg/kg,抑霉唑0.01mg/kg。

The method of determining pyrimethanil, flusilazole, imazalil in fruit and vegetable foods was established. The sample was extracted with ethyl acetale, and detected by GC -FTD/NPD. In the purifying process, Silica was used, The limits of pyrimethanil, flusilazole and imazalil were 0.005, 0.01 and 0.01mg/kg. The method had the advantage of accuracy, repeatability and good precision.