储钠罐氩气中N<SUB>2</SUB>的分析

储钠罐氩气中N₂的分析

摘要: 通过比较不同取样方法对于分析中国实验快堆储钠罐覆盖气体氩气中杂质N₂的影响，建立了气体回路氩气中杂质N₂的分析方法。N₂体积分数（φ(N₂)）的分析下限为1.6×10^-5, 对φ(N₂)=（33.6～307）×10^-6的N₂/Ar，精密度好于3.4%，其检测限满足中国实验快堆规定的氩气中杂质N₂的分析要求。

Abstract: The report compares different sampling methods and their effects on the analysis of nitrogen impurity in cover gas argon of sodium storage tank in China experimental fast reactor (CEFR). The report develops also a method to analyze nitrogen impurity in the argon gas loop. Its analytic lower limit is 1.6×10^-5. Precision is better than 3.4% for φ(N₂)=(33.6307)×10^-6 N₂/Ar. Its detection limit can meet the demand for analyzing nitrogen impurity in argon for CEFR.