氢同位素色谱分析研究进展

Research Progress of Gas Chromatography for Hydrogen Isotope Analysis

对氢同位素色谱分析研究进展进行了综述,内容主要包括分析原理、材料研究与分析柱研制。材料研究主要包括改性材料的负载量、阳离子种类、阴离子种类。分析柱研制在材料研究的基础上进行,根据测试需求,在材料性质、柱型、柱长等方面进行设计,优选出适合于具体使用场景的建议柱型。无过渡金属磁性催化作用的氧化铝PLOT(porous layer open tubular)柱,适用于氢同位素的正-仲态分离;含过渡金属磁性催化作用的氧化铝色谱柱,适用于氢同位素的分子态分离。一般地,PLOT柱使用寿命较短,但其适用于快速分析;微填充柱分析时间较长,但性能稳定性较好。有序介孔材料(OMMs),具有较大比表面积,通过调节介孔孔径有望提升氢同位素低温分离性能;过渡金属离子(如Cu(Ⅰ))对氢分子的Kubas作用,有望实现氢同位素常温洗脱分离。

Research progress of gas chromatography(GC)was reviewed for hydrogen isotope analysis.Related research was included on analysis principle,materials and column design.The main factors of material research include deposit content,cations,and anions.Column design concerns material properties,column type and its length,to meet analysis requirement in various conditions.GC porous layer open tubular(PLOT)columns can be used to analyze ortho/para ration,in which porous alumina is decorated with non-transition metal ions.And columns with porous alumina deposited with transition metal ions,can be used to determine molecules of hydrogen isotopes.The PLOT column is fit for fast analysis,although it has a relative short life;while the packed column has a relative long life,although it has a relative long analysis time.Ordered mesopous materials(OMMs)have potential to improve separation efficiency in cryogenic temperature,and hydrogen isotope elution at room temperature will be accomplished with the aid of hydrogen adsorption catalyzed by transition metal ion such as Cu(Ⅰ).