氧化锆检测器在微量氢同位素色谱分析中的应用研究
发布时间：2018-08-17 19:05
【摘要】：针对氦气与氢同位素气体热导性差异较小的问题,以氧化锆原电池为气相色谱检测器、改性γ-Al_2O_3为填充柱,在液氮温度(77K)下系统研究了氧化锆检测器测量氢同位素的影响因素,对氦气中微量氢同位素气体进行了分离测试。结果表明,氧化锆检测器的最佳工作温度约为700℃,在载气流速为60mL/min条件下,仪器测量的相对标准偏差小于1%,该方法对H2的检测下限可达15ppm,对D2的检测下限可达40ppm,样品检测的相对误差小于5%。以上结果表明,氧化锆检测器可用于氦气中微量氢同位素的分析测量。
[Abstract]:Aiming at the small difference of thermal conductivity between helium gas and hydrogen isotope gas, using zirconia primary cell as gas chromatographic detector and modified 纬 -Al _ 2O _ 3 as filling column, the influence factors of zirconia detector for measuring hydrogen isotope were systematically studied at liquid nitrogen temperature (77K). The separation and measurement of trace hydrogen isotope gas in helium were carried out. The results show that the optimum operating temperature of zirconia detector is about 700 鈩，
本文编号：2188601
[Abstract]:Aiming at the small difference of thermal conductivity between helium gas and hydrogen isotope gas, using zirconia primary cell as gas chromatographic detector and modified 纬 -Al _ 2O _ 3 as filling column, the influence factors of zirconia detector for measuring hydrogen isotope were systematically studied at liquid nitrogen temperature (77K). The separation and measurement of trace hydrogen isotope gas in helium were carried out. The results show that the optimum operating temperature of zirconia detector is about 700 鈩，
本文编号：2188601
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