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目的:建立了韭菜中8种氨基甲酸酯农药残留的三重串联四极杆气相色谱/质谱联用分析方法。方法:样品用乙腈匀浆提取后采用固相萃取法(SPE)净化,采用三重串联四极杆气相色谱/质谱联用在多反应监测模式(MRM)下进行测定,外标法定量。结果:分别对韭菜进行两个水平的加标回收试验(50μg/kg、200μg/kg),其回收率在94.5%～106.3%范围,方法的相对标准偏差小于8%,方法的定量下限(LOQ)范围为0.8μg/kg～8.7μg/kg。结论:该方法适合韭菜中8种氨基甲酸酯农药残留的测定,具有良好的回收率及稳定性。
OBJECTIVE: To establish a triple quadrupole GC / MS method for the determination of eight carbamate pesticides in Chinese chives. Methods: The samples were purified by solid phase extraction (SPE) after being homogenized with acetonitrile and analyzed by triple quadrupole gas chromatography / mass spectrometry in multiple reaction monitoring mode (MRM). Results: Two levels of spike leaching test (50μg / kg, 200μg / kg) were performed on leeks with recovery of 94.5% -106.3%. The relative standard deviation of the method was less than 8%. The lower limit of quantification ) Ranged from 0.8 μg / kg to 8.7 μg / kg. Conclusion: This method is suitable for the determination of 8 carbamate pesticide residues in chives, with good recovery and stability.