QuEChERS-气相色谱-质谱联用法测定茶叶中六六六、滴滴涕残留量  

Determination of Hexachlorocyclohexane and DDT in Tea by QuEChERS-Gas Chromatography-Mass Spectrometry

作　　者：魏昭 靳雅楠 张爱学 王哲 张秀丰 WEI Zhao;JIN Yanan;ZHANG Aixue;WANG Zhe;ZHANG Xiufeng(Hengshui General Inspection and Testing Centre,Hengshui 053000,China;Technology Center of Shijiazhuang Customs District,Shijiazhuang 050000,China)

机构地区：[1]衡水市综合检验检测中心,河北衡水053000 [2]石家庄海关技术中心,河北石家庄050000

出　　处：《食品安全导刊》2025年第11期95-98,102,共5页China Food Safety Magazine

基　　金：衡水市重点研发计划项目(2024014009Z)。

摘　　要：目的:建立一种基于QuEChERS前处理技术的检测体系,结合气相色谱-质谱联用法同时测定茶叶中六六六、滴滴涕农药残留的检测方法。方法:样品通过QuEChERS法提取和净化,采用DB-5MS毛细管色谱柱进行分离,在选择离子监测模式下完成同时测定,外标法定量。结果:六六六、滴滴涕农药在0.01~1.00 mg·L^(-1)线性关系良好,相关系数均大于0.999。方法检出限为0.005~0.009 mg·kg^(-1),加标平均回收率在88.2%~103.8%,相对标准偏差为0.74%~3.50%。结论:该方法稳定、准确、简易快捷,适用于茶叶中六六六、滴滴涕残留的同时检测。Objective:To establish a detection system based on QuEChERS pretreatment technology,combined with gas chromatography-mass spectrometry for simultaneous determination of pesticide residues of hexachlorocyclohexane and DDT in tea.Method:The sample was extracted and purified using QuEChERS method,separated using DB-5MS capillary chromatography column,and simultaneously measured in ion monitoring mode.Quantification was performed using external standard method.Result:The linear relationship between hexachlorocyclohexane and DDT pesticides was good between 0.01 mg·L^(-1) and 1.00 mg·L^(-1),with correlation coefficients greater than 0.999.The detection limit of the method is 0.005~0.009 mg·kg^(-1),with an average recovery rate of 88.2%~103.8% and a relative standard deviation of 0.74%~3.50%.Conclusion:This method is stable,accurate,simple,and fast,and is suitable for simultaneous detection of residual hexachlorocyclohexane and DDT in tea.

关 键 词：QUECHERS 气相色谱-质谱联用 茶叶 六六六 滴滴涕 

分 类 号：O657.7[理学—分析化学]