摘要
建立了粮谷中169种农药多残留的气相色谱-三重串联四极杆质谱(GC-MS/MS)的检测方法。样品经改进的QuEChERS净化处理,气相色谱分离,串联四级杆质谱多反应监测方式检测。结果表明,169种农药在粮谷中的检出限为0.3～13.0μg/kg,定量限为1.0～40.0μg/kg,线性范围在0.005 mg/L～2.0 mg/L之间,线性相关系数大于0.99,平均回收率在65.3%～143.6%之间,97%的农药相对标准偏差小于20%,该方法具有前处理简单、净化效果好、灵敏度高的特点,适用于粮谷中多组分农药残留的快速确认和定量检测。
A method was developed for the simultaneous determination of 169 pesticides in grains by gas chromatography with tandem mass spectrometry （GC-MS/MS）. The homogenized sample was extracted with acetonitrile, and then purified by QuEChERS, The targeted compounds were detected by GC-MS/MS system under the mode of multiple reaction monitoring （MRM）. The results indicated that the limits of detection （LODs） of 169 pesticides were ranged from 0.3 to 13.0 ~tg/kg. The LOQs of the tested pesticides were between 1.0 and 40.0/lg/kg. In the linear range between 0.005 and 2.0 mg/L of each pesticide, the linear correlation coefficients were greater than 0.99. The average recoveries ranged from 65.3% to 143.6% and the RSDs of 97% pesticides were less than 20%. This method was suitable for the identification and quantification of multi-component pesticides in grains due to its simplicity, good purification and high sensitivity.
出处
《现代食品科技》
EI
CAS
北大核心
2012年第6期695-702,共8页
Modern Food Science and Technology
基金
广东省科技计划项目(2007B023001001)
国家质检总局科技计划项目,液相色谱串联飞行时间质谱筛查检测水果中多农药残留的研究(2011QK326)
广州市科信局科技计划项目,广州市食品安全检测技术重点实验室(穗科信字[2011]233-34号)
