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氦、氢是反映地下构造运动较灵敏的组分之一,已引起地震工作者的注意。但是,作为监测项目,多井孔地进行系统观测、对比,国内开展甚少,其主要原因是地下水中氦、氢含量低,特别是氢一般只有几个至十几个ppm。分析用气相色谱仪,热导监测器(通用型)灵敏度较低,而且色谱柱填充固定相对氦、氢分离度差,给定量测定带来较大困难。 为了解决氦、氢分离,在固定相的选择上采用新型碳分子筛——TDX-01B。它有较
Helium and hydrogen are one of the more sensitive components of underground tectonics, which has attracted the attention of earthquake workers. However, as a monitoring project, there are many wells in the system observation, contrast, very little domestic development, mainly due to groundwater helium, low hydrogen content, especially hydrogen is generally only a few to a dozen ppm. Analytical gas chromatography, thermal conductivity detector (universal) lower sensitivity, and the column filled with helium fixed stationary phase, hydrogen separation is poor, given quantitative determination of greater difficulty. In order to solve the helium, hydrogen separation, the choice of the stationary phase using a new type of carbon molecular sieve - TDX-01B. It has more