气体浓缩进样技术及其在GC/MS中的应用  

Gas concentration sampling lechaique and its applications in GC/MS analysis

作　　者：余秉良[1] 魏永嘉 

机构地区：[1]航天医学工程研究所,北京100094

出　　处：《分析仪器》1995年第4期9-12,共4页Analytical Instrumentation

摘　　要：气体浓缩进样是痕量气体分析的关键技术之一。多孔聚合物吸附浓缩法适合GC/MS联用定性分析的要求。应用Tenax-GC吸附剂建立了二级浓缩GC/MS联用分析技术。介绍了浓缩进样装置的原理、结构、分析条件、操作步骤和应用结果。对该技术的优缺点和实践经验作了简要讨论。Gas concentration sampling technique is one of the key techniques in trac?gas analysis. Porous polymer adsorp-tion concentration can meet the requirement of GC/MS qualitative analysis. A two-stage concentration system has been established for GC/MS analysis using Tenax-GC as adsorbent. The principle, construction , analytical conditions, operational procedures and the experimental results are described. The merits and shortcomings and the experience of applicatbns are discussed.

关 键 词：痕量分析 气体浓缩技术 色谱/质谱分析 固体吸附剂 

分 类 号：O659.36[理学—分析化学] O657[理学—化学]