正压罐采样-预浓缩-GC/MS法测定空气中痕量卤代烃  

Determination of Trace Halogenated Hydrocarbons in Air by Canister Collecting-Preconcentration-GC/MS

作　　者：由希华 张凤菊 李琳 曹方方 李红莉 YOU Xihua;ZHANG Fengju;LI Lin;CAO Fangfang;LI Hongli(Shandong Provincial Eco-environment Monitoring Center,Jinan,Shandong,250101,China)

机构地区：[1]山东省生态环境监测中心,山东济南250101

出　　处：《环境监测管理与技术》2024年第2期49-52,共4页The Administration and Technique of Environmental Monitoring

基　　金：山东省自然科学基金资助项目(ZR2020ZD21)。

摘　　要：采用正压罐采样-预浓缩-GC/MS法同时测定空气中16种卤代烃,通过优化试验条件,使16种痕量卤代烃在30 min内实现分离,目标物分别在40 pmol/mol~200 pmol/mol和5 pmol/mol~100 pmol/mol范围内线性良好,方法检出限为4 pmol/mol~55 pmol/mol。标准气体6次测定结果的RSD为1.0%~7.2%,空白样品加标回收率为72.5%~125%。16 halogenated hydrocarbons in air were simultaneously determined by canister collecting-preconcentration-GC/MS.By optimizing the test conditions,16 trace halogenated hydrocarbons were separated within 30 min.The target objects had good linearity in the range of 40 pmol/mol to 200 pmol/mol and 5 pmol/mol to 100 pmol/mol.The method detection limits were from 4 pmol/mol to 55 pmol/mol.The RSDs of 6 measurements of standard gas ranged from 1.0%to 7.2%.The recoveries of blank samples were from 72.5%to 125%.

关 键 词：卤代烃 预浓缩 气质联用法 环境空气 

分 类 号：O657.63[理学—分析化学]