将超声波提取法与混合层析柱净化法联合,利用气相色谱-电子捕获检测器(GC-ECD),建立了一种高效、快速的卷烟主流烟气中拟除虫菊酯类农药含量的检测方法.通过对提取条件和净化条件进行优化,最佳条件为:丙酮超声波提取捕集有卷烟主流烟气总粒相物的剑桥滤片,采用混合层析柱净化,卷烟主流烟气气相部分直接采用丙酮捕集,浓缩净化进样分析.优化条件下,方法的回收率为92.8％-97.3％,RSD为2.71％-9.02％,最低定量限为0.026-0.098 μ g/mL,最小检测限为0.0001-0.0009 μg/mL,可满足卷烟主流烟气中拟除虫菊酯类农药含量的检测要求.%A new method was developed for determining pyrethroids pesticides in mainstream cigarette smoke using ultrasonic extraction (USE) and mixed chromatography column purification coupled with capillary gas chromatography with electron capture detection (GC-ECD). The mean recoveries of this method ranged from 92.8% to 97.3% with relative standard deviations (RSD) between 2.71% and 9.02% if parameters were optimized. The method was suitable for determining pyrethroids pesticides in mainstream cigarette smoke.
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