固相萃取-气相色谱质谱法测定饮用水中9种农药残留  

Determination of 9 Pesticide Residues of Drinking Water by Solid Phase Extraction-Gas Chromatography Mass Spectrometry

作　　者：邱姚瑶 谷贵章 曹秋虹 王新财 曾坤 QIU Yaoyao;GU Guizhang;CAO Qiuhong;WANG Xincai;ZENG Kun(Huzhou Institute for Food and Drug Control,Huzhou 313000,China)

机构地区：[1]湖州市食品药品检验研究院,浙江湖州313000

出　　处：《食品安全导刊》2023年第16期72-75,共4页China Food Safety Magazine

基　　金：湖州市科技计划项目“湖州地产包装饮用水及源水水质分析及评价研究”(2019GZ30)。

摘　　要：目的:建立气相色谱-质谱同时测定饮用水中常见9种农药残留的测定方法。方法:农药组分经Oasis HLB固相萃取柱富集,乙酸乙酯/正己烷(1∶1)混合溶剂洗脱,气相色谱-质谱检测,标准工作曲线外标法定量。结果:9种农药残留在0~5.000 mg·L^(-1)线性关系良好,相关系数(R2)大于0.998,加标回收率为75.7~103.0%,9种农药的定量限为0.003~0.075μg·L^(-1),精密度为1.1%~7.4%(n=6)。结论:该方法操作简便、重复性好、准确度高,适用于饮用水中9种常见农药残留的测定。Objective:To establish a method of simultaneous determination of 9 pesticide residues of drinking water by gas chromatography-mass spectrometry.Method:Pesticide residues were extracted by Oasis HLB solid phase extraction column,eluted by mixed solvent ethyl acetate/n-hexane(1∶1),detected by gas chromatographymass spectrometry,and quantified by external standard method based on standard working curve.Result:The linear relationships of 9 analytes were good in the range of 0~5.000 mg·L^(-1),and their correlation coefficients(R2)were higher than 0.998,their average recoveries of the method ranged among 75.7~103.0%,the limits of quantitation of 9 pesticides were 0.003~0.075μg·L^(-1),and the relative standard deviation was among was 1.1%~7.4%(n=6).Conclusion:This method is easy to operate,has good precision and accuracy,and is suitable for determination of 9 common pesticide residues of drinking water.

关 键 词：固相萃取 气相色谱-质谱法 农药残留 饮用水 

分 类 号：O657.63[理学—分析化学] R123.1[理学—化学]