氦离子化色谱仪分析高纯氘气方法的开发  

Development of a Method for Analyzing High-purity Deuterium Gas Using Helium Ionization Chromatography

作　　者：王祥科 钱阿慧 WANG Xiangke;QIAN Ahui(Lansis Instrument(Shanghai)Co.,Ltd.,Shanghai 201702,China)

机构地区：[1]朗析仪器(上海)有限公司,上海201702

出　　处：《低温与特气》2024年第2期37-40,50,共5页Low Temperature and Specialty Gases

摘　　要：氘气被广泛应用于各种领域,并且是核聚变最有前景的材料之一。针对目前分析检出限低、载气较贵的问题(氖做载气),首次提出使用氦离子化检测器分析高纯氘气。其中高纯氘气中无机杂质气体氩气、氧气、氮气、甲烷、一氧化碳、二氧化碳的检出限可达0.01×10^(-6)(体积分数);使用改性氧化铝色谱柱,在77 K低温下分离;H_(2)和HD检出限可达1×10^(-6)(体积分数)。对氘气样品进行分析,达到预期分析效果。实验采用脉冲氦离子化检测器为检测手段,对高纯氘气中的杂质进行分析,提高了检出限,并且采用氦气为载气比氖气作为载气更具分析成本优势。Deuterium gas is widely used in various fields and is one of the most promising materials for nuclear fusion.In response to the current problem of low detection limit and expensive carrier gas(neon as carrier gas),a helium ionization detector was first used to analyze high-purity deuterium gas.The detection limit of inorganic impurity gases such as argon,oxygen,nitrogen,methane,carbon monoxide,and carbon dioxide in high-purity deuterium gas can reach 0.01×10^(-6)(volume fraction);A modified alumina column was used for separation at a low temperature of 77 K;H_(2 )and HD detection limits can reach 1×10^(-6)(volume fraction).The deuterium gas samples were analyzed to achieve the expected analysis results.This experiment uses a pulse helium ionization detector as the detection method,which increases the detection limit for impurities in high-purity deuterium gas.Helium gas is also used as the carrier gas,which has a more cost-effective analysis advantage than neon gas.

关 键 词：高纯氘气 色谱分析 氢-氘气体 

分 类 号：O657.7[理学—分析化学]