建立毛木耳上联苯菊酯、甲氰菊酯、高效氯氟氰菊酯、高效氯氰菊酯、氰戊菊酯和溴氰菊酯等6种拟除虫菊酯杀虫剂的多残留分析方法。样品经乙腈提取,弗罗里硅土(5%脱活)柱层析净化,石油醚/乙酸乙酯(V/V=98/2)淋洗液洗脱,淋出液浓缩后用正己烷定容供气相色谱-电子捕获检测器(GC-ECD)检测。添加回收实验结果表明,供试6种拟除虫菊酯杀虫剂的添加浓度为0.005~0.5 mg·kg-1时,线性关系良好,相关系数大于0.9990;添加回收率为81.68%~96.39%,RSD为1.87%~5.82%,最低检测浓度为0.005 mg·kg-1;多残留分析方法的准确性、精确性以及灵敏度均满足农药残留分析的要求。 To establish a multi-residue analysis method for six pyrethroid insecticides, such as bifenthrin, fenpropathrin, lambda-cyhalothrin, beta-cypermethrin, fenvalerate and deltamethrin. The sample was eluted with acetonitrile, eluted with Florisil (5% deactivated) and eluted with petroleum ether / ethyl acetate (V / V = ​​98/2). The filtrate was concentrated and eluted with n-hexane Quantitative gas chromatography - electron capture detector (GC-ECD) test. The results of the recovery experiment showed that the linearity of the six pyrethroid insecticides at the concentration of 0.005-0.5 mg · kg-1 was good, the correlation coefficient was over 0.9990, the recoveries were 81.68% -96.39%, RSD 1.87% -5.82%, and the lowest detection concentration was 0.005 mg · kg-1. The accuracy, precision and sensitivity of the multi-residue analysis method all meet the requirements of pesticide residue analysis.