SPE-GC-MS快速定性定量杀虫剂产品中11种违禁添加菊酯类隐性成分

SPE-GC-MS Rapid Qualitative and Quantitative 11 Kinds of Banned Add Pyrethroid Stealth Component in Pesticides Products

[目的]采用气相色谱-质谱联用仪（GC—MS）结合SIM（选择离子扫描）模式对杀虫剂产品中违禁添加菊酯类隐性成分进行定性定量分析。[方法]样品用Florisil固相萃取小柱进行固相萃取处理，用HP-5Ms毛细管气相色谱柱、电子轰击（EI）电离方式，对杀虫剂产品中违禁添加菊酯类隐性成分进行测定，并且取得良好的结果。【结果】该方法样品平均加标回收率为92．3％～120．8％，相对标准偏差为1．4％-8．9％；菊酯类农药检出限为0．008-0．048mg／L。【结论】该方法步骤简单，消耗费用低，净化效果好，具有良好的灵敏度、回收率和重现性。

[Aims] By using gas chromatography-mass spectrometry （GC-MS） combined with SIM （selected ion monitoring） mode, the illegal pyrethriod additive in pesticides products were detected qualitatively and quantitatively, [Methods] Sample was extracted by Florisil SPE column, and then separated with HP-5MS capillary columns, followed by ionization with EI. The banned components in pesticides products were detected by this method, and good results were achieved. [Results] The average recoveries were between 92.3 and 120.8%, relative standard deviations were between 1.4 and 8.9%. The detection limits were 0.008-0.048 mg/L. [Conclusions] The method is very easy to operate, cheap for cost, excellent for purification, and has the advantages of good recovery, repeatability, and sensitivity.