大体积进样-气质联用测定饮用水中27种有机物  

An Analysis of 27 Organic Compounds in Drinking Water by Large-Volume Injection Programmed Temperature Vaporizer-Gas Chromatography-Mass Spectrometry

作　　者：肖潇[1] 王庆国[1] 丁昌明[2] 李菁[1] 王冉冉[1] 马鑫[1] XIAO Xiao;WANG Qingguo;DING Changming;LI Jing;WANG Ranran;MA Xin

机构地区：[1]新疆维吾尔自治区疾病预防控制中心,新疆维吾尔自治区乌鲁木齐市830002 [2]中国疾病预防控制中心环境与健康相关产品安全所

出　　处：《环境卫生学杂志》2020年第2期185-190,共6页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：新疆卫生健康委(原卫生计生委)青年医学科技人才专项科研项目(WJWY-201811)。

摘　　要：目的优化大体积进样联合气相色谱质谱联用仪(programmed temperature vaporizer-gas chromatography-mass spectrometry,PTV-GC-MS)同时测定饮用水中27种有机物的方法。方法水中氯苯类、有机磷农药、有机氯农药等27种有机物通过HLB小柱固相萃取,乙酸乙酯洗脱,PTV-GC-MS测定,内标法定量。结果27种有机物线性关系良好,相关系数均>0.995,方法检出限为(0.007~0.04)μg/L,回收率在64.1%~129.8%之间,RSD为2.3%~14.8%(n=6)。结论优化的PTV-GC-MS法测定饮用水中27种有机物的方法快速、准确、高效。Objective To optimize the method for simultaneous analysis of 27 organic compounds in drinking water by large-volume injection programmed temperature vaporizer-gas chromatography-mass spectrometry(PTV-GC-MS).Methods Twenty-seven organic compounds such as chlorobenzenes,organophosphorus pesticides,and organochlorine pesticides in the water were subjected to solid-phase extraction with hydrophilic-lipophilic balance cartridge,elution with ethyl acetate,detection with PTV-GC-MS,and quantification with the internal standard method.Results The linear relationships between the 27 organic compounds were good,with all the correlation coefficients being greater than 0.995,detection limits of the method ranging from 0.007 to 0.04μg/L,recovery rates ranging from 64.1%to 129.8%,and relative standard deviations ranging from 2.3%to 14.8%(n=6).Conclusion The optimized method for analysis of 27 organic compounds in drinking water by PTV-GC-MS is rapid,accurate,and efficient.

关 键 词：大体积进样 气相色谱质谱联用 有机物 

分 类 号：O661.1[理学—分析化学]