两种蔬菜中甲胺磷、氧乐果和克百威的残留量分析

Residue Analysis of Methamidophos, Omethoate and Carbofuran in Vegetables

分别选取一种瓜菜 (黄瓜 )和一种叶菜 (生菜 ) ,选择了两种有机磷 (甲胺磷、氧乐果 )和一种氨基甲酸酯类 (克百威 )农药 ,对这 3种农药在两种蔬菜中的残留测定方法进行了研究。采用弗罗里硅土柱提取的方法进行前处理 ,淋洗液浓缩后用 GC- NPD测定 ,建立了一种简便快速的检测方法 ,并采用该方法对实际处理样本进行了测定。从方法添加回收率和实测数据可以看出 ,该方法净化提取效果好 ,结果平行性好 ,灵敏度较高 。

The residue analytical method of two organophosphorus pesticides (methamidophos and omethoate) and one carbamate pesticide (carbofuran) in cucumber and lettuce was studied. The florisil was mixed with the homogenized vegetable samples. The florisil mixture column was used in the pretreatment of the samples. The eluted solvent was concentrated and directly detected by GC NPD. This method was further used for the determination of the pesticides residue in the treated vegetables. The fortified recoveries and the detection results showed that the extraction and cleaning up procedures were good, and the method has good repeatability and sensitivity. It is a rapid and precise analytical method of those pesticides in vegetables.