茚虫威残留的气相色谱-质谱联用法测定

摘要

Indoxacarb residue in vegetables&fruits was detected by SIM-GC-MS with solid phase extraction (SPE). Samples were mixed and extracted by acetonitrile,and were purified by florisil added pesticarb cartridge,dissolved by acetone. The spiked recovery is 86. 5% ~ 107.2% ,the RSD is less than 5. 0% ,and the LOD is 0.0010μg·g-1.%研究了用固相萃取(SPE)-选择离子(SIM) -气相色谱(GC) -质谱(MS)联用法测定蔬菜、水果中茚虫威残留的分析方法.样品采用乙腈超声波均质提取,固相萃取柱净化,丙酮定容.添加量为0.05 μg ～ 1.00μg时,回收率为86.5％ ～ 107.2％,相对标准偏差(RSD)＜5.0％,定量检出限为:0.0010 μg·g-1.