气相色谱质谱联用法测定液氧中微量的氪和氙  

Determination of trace krypton and xenon in liquid oxygen by Gas Chromatography/Mass Spectrometry

作　　者：唐轩[1] 陈鹰[2] 吴建军[2] 

机构地区：[1]中国寰球工程公司 [2]上海市计量测试技术研究院

出　　处：《上海计量测试》2013年第5期2-4,共3页Shanghai Measurement and Testing

摘　　要：利用气相色谱质谱联用技术中的选择离子监测（SIM）方式对液氧中的微量氪气和氙气进行了测定。选择m/z为84的离子作为氪的定量离子、m/z为132的离子作为氙的定量离子。方法简单、快速、选择性好，在浓度为（1.0~100）×10-6 V/V范围内，峰面积与浓度有良好的线性关系。同时考察了方法的最低检测浓度和重复性。Trace krypton and xenon was determined by gas chromatography/mass spectrometry with selection ion monitoring mode （SIM）. The ions m/z=84 and m/z=132 were chosen as quantitative ion for krypton and xenon respectively. The results show that it is a simple way to implement, rapid detection and good selectivity. The linear relation between the peak area and concentration was excellent within the range of （1.0~100）×10-6 V/V. Meanwhile, the minimum detectable concentration and repeatability was also detected.

关 键 词：气相色谱 质谱 选择离子监测 氪(Kr) 氙(Xe) 

分 类 号：TQ116.14[化学工程—无机化工] O657.63[理学—分析化学]