| 密闭容器中痕量氢气的分析测试研究 |
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| 引用本文： | 王成端,赵诚,刘建平.密闭容器中痕量氢气的分析测试研究[J].西南科技大学学报,2007,22(1):80-84. |
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| 作者姓名： | 王成端 赵诚 刘建平 |
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| 作者单位： | 西南科技大学环境与资源学院,四川绵阳,621010 |
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| 基金项目： | 国家自然科学基金委员会-中国工程物理研究院联合基金资助项目（10376029）. |
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| 摘 要： | 讨论了对密闭容器中痕量氢气样品利用钯合金吸氢的特性进行浓缩的方法,对钯合金的吸氢容量做了理论分析,采用样品气透过钯管的方式进行了实验研究。结果表明:利用钯合金吸氢特性设计的透氢装置,以高纯N:为携带气,在温度390～450℃、适当的样品气流速条件下,H2渗透率达70％-80％且恒定,可用于氢的痕量分析;经稳定性、可靠性实验证明该分析方法具有精度高、简便迅速等特点,对痕量氢气的检测极限可提高10-100倍。
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| 关 键 词： | 痕量分析 氢气 钯吸附 |
| 文章编号： | 1571-8755(2007)01-0080-05 |
| 修稿时间： | 2006-01-08 |
Study on Trace Hydrogen Testing in Obturator |
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| WANG Cheng-duan,ZHAO Cheng,LIU Jian-ping.Study on Trace Hydrogen Testing in Obturator[J].Journal of Southwest University of Science and Technology,2007,22(1):80-84. |
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| Authors: | WANG Cheng-duan ZHAO Cheng LIU Jian-ping |
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| Institution: | School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China |
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| Abstract: | The method to concentrate trace hydrogen sample in obturator was discussed owing to the characteristic of Pd alloy adsorption hydrogen. The capacity of Pd alloy adsorption hydrogen was theoretically analyzed and the experiment was made through sample gas permeating Pd cannulation. The results show that the permeating hydrogen equipment designed by use of the characteristic of Pd alloy adsorption hydrogen can be applied to analyze trace hydrogen, and the permeating rate of H2 with high pure N2 as carrying gas is stable to 70% ~ 80% at the temperature of 390 ~ 4500C with some sample gas rate. It is proved through experiment of stability and reliability that this method is highly precise and convenient and the test limit could be improved 10-100 times. |
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| Keywords: | trace analysis hydrogen adsorption by Pd |
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