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%.

     

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