固相萃取-气相色谱质谱联用法测定蔬菜中杜烯残留

Determination of Durene Residue in Vegetables bySolid-Phase Extraction and GC-MS

摘要: 建立固相萃取-气相色谱-质谱联用内标法测定蔬菜中杜烯残留量的检测方法.样品经乙腈提取，弗罗里硅土固相柱净化后，用气相色谱质谱联用仪进行检测.方法的检出限为0.005 mg/kg，经过不同实验室验证，样品中杜烯的平均基体添加回收率在81.0%～112.0%之间，室间精密度在1.03%~3.89％之间.

Abstract: A simply and rapid method has been established for the determination of durene residue in vegetables by solid-phase extraction and GC-MS．The sample was extracted with acetonitrile，and cleaned up on a Florisil column，and detected by the internal standard method with GC-MS.The lowest detectable concentration in samples was 0.005 mg／kg．Samples recoveries ranged from 810%~110.0%．The coeficients of variation was 1.03%~3.89%.