在空分生产中,常需要在线监测精氩中微量氮的含量。在高纯氩质量监控中也需要测定微量氮的含量。因此,氩中微量氮的检测就成为一个空分生产主要监测的项目。近十年来,国内部分大中型空分配套有带放射源的氩中氮分析仪。其检测范围为0-10ppm及0-50ppmN_2/Ar。这种仪器价位较廉,常受到欢迎。但是,由于近些年来,国内外对放射性物质影响生存环境及人身健康日益关注,因此,国外又 In space-division production, it is often necessary to monitor the trace amounts of nitrogen in the refined argon on-line. In high-purity argon quality monitoring also need to determine trace nitrogen content. Therefore, the detection of trace nitrogen in argon becomes a major monitoring project for the production of air separation. In the past ten years, some domestic large and medium-sized air distribution sets have argon nitrogen analyzer with radioactive sources. The detection range is 0-10ppm and 0-50ppmN_2 / Ar. This instrument is cheaper and is often welcomed. However, due to the increasing concern over the impact of radioactive material on the living environment and human health at home and abroad in recent years,