多维气相色谱法测定大气中一氧化碳  

Multi-Dimensional Gas Chromatogra-phy for Analysis of Carbon Monoxide in At-mosphere

作　　者：蒋文全[1] 崔熙钟[1] 任晓华[1] 

机构地区：[1]北京有色金属研究总院

出　　处：《分析试验室》1996年第1期74-79,共6页Chinese Journal of Analysis Laboratory

摘　　要：采用多维气相色谱法测定大气中的一氧化碳，解决了镍催化剂将ＣＯ转化成ＣＨ＿４时产生大拖尾“氧峰”对ＣＯ色谱峰掩盖的问题，提高了方法的灵敏度和准确度。运用均匀设计编制实验方案，多元回归分析和最优化技术确定分析最佳条件。建立了气相色谱分析计算机优选试验条件的方法。进样１ｍＬ，最低检测浓度为０．４×１０￣（－４）％（Ｖ／Ｖ），相对标准偏差小于２．６％（ｎ＝８）。The developing method for determina-tion of carbon monoxide in atmosphere bymulti-dimensional gas chromatography,solves the problem of a large tailing peakoverlapping the chromatographic peak of co,in the process of the metal Ni catalyzer con-version,and improves the analytical sensi-tivity and accuracy. The best experimentalscheme is determined by using homogenousdesignation, multiple regression analysis andoptimun technology. The method of thecomputer optimum chromatographic testingconditions is established. Feeding1. 0mLsample, the minimum detectable concentration is 0. 4×10￣(-4)%(V/V),and the relativestandard deviation is smaller than 2.6%.

关 键 词：气相色谱 大气分析 一氧化碳 

分 类 号：X132[环境科学与工程—环境科学] O657.71[理学—分析化学]