固相萃取-气相色谱法测定植物性食品中恶草酮残留量方法研究

Determination of oxadiazon residues in plant food by solid-phase extraction-gas chromatography

目的：建立固相萃取一气相色谱法测定植物性食品中恶草酮的方法。方法：采用硅镁吸附剂预处理小柱进行净化，气相色谱电子捕获检测器进行食品中恶草酮残留量测定分析，对前处理和仪器条件进行试验研究。结果：方法的检出限为0．005mg／kg，添加回收率为88．0％-95．0％，相对标准偏差为4．25％-8．21％。结论：该方法的建立具有操作简便、准确、灵敏度高的特点，适合于植物性食品中恶草酮残留量的测定。

Objective：A analysis method was developed for the determination of oxadiazon residues in plant food by solid phase extraction - gas chromatography. Methods： Cleane - up by florisil SPE cartridge and determination of oxacliazon residues in plant food by electron capture detection. Results：The detection limit of the method was 0. 005 mg/kg. The recovery of the method ranged from 88.0% to 95.0%. The relative standard deviation was between 4. 25% and 8.21%. Conclusion：This method is simple,accurate and sensitive and reliable to determine oxadiazon residues in plant food.