固相微萃取-气相色谱联用技术分析混合气体中微量氢  

Determination of Hydrogen in Mixing Gas Using Solid-Phase Microextraction and Gas Chromatography

作　　者：马浚[1] 唐元明[1] 张勤英[1] 龚有进[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《分析测试技术与仪器》2007年第3期182-186,共5页Analysis and Testing Technology and Instruments

基　　金：中国工程物理研究院基金项目(No.20040537)

摘　　要：制备钯-5A分子筛萃取头，使用固相微萃取-气相色谱联用技术，建立了对混合气体中微量氢气的分析方法．实验结果表明，含氢浓度在0．0011～0．1250mL／L范围内，具有良好线性关系，检出限为9×10^-4mL／L．此方法和气相色谱法比较，有更高的灵敏度和更少的干扰，2种方法的标准偏差为8．7％．A method for fast analysis of minimum hydrogen from mixture gas was established. This method was performed by using solid phase microextraction with a preparate Pd-5A molecule sieve, coated fiber coupled with gas chromatography. The results showed that the linear range of hydrogen was 0.001 1-0. 125 0 mL/L. The limit detection is 9 × 10^-4 mL/L. This method compared to gas chromatography has the advantages of high sensitivity and less interference. The standard deviations of two methods are 8. 7%.

关 键 词：固相微萃取 气相色谱 氢气 

分 类 号：O657.71[理学—分析化学]