摘要
中国实验快堆 (CEFR)选用金属钠做为冷却剂 ,其中杂质钾对它的热性能产生影响。为了检测核级钠中钾的含量 ,建立了直接溶样 火焰原子发射光谱法测定钠中的杂质钾的方法。实验中研究了超声波加湿溶样系统 ,优选了燃气 (C2 H2 )、助燃气 (Air)流量和燃烧器高度等工作参数 ,研究了酸效应、基体钠和共存元素的干扰效应。进行了高纯钠中加钾的回收实验 ,回收率在 94 7%～ 10 9 8%之间 ,相对标准偏差为 4 2 %。本方法能够满足核级纳中杂质钾的分析要求 。
Sodium is used as a coolant in China experiment fast reactor (CEFR). Potassium in sodium has an influence on heat property of reactor. A analytical method has been developed to determinate potassium in sodium by flame atomic emission spectroscopy. Sodium sample is dissolved by ultrasonic humidifier. The working conditions of the instrument and inferferences from matrix sodium, acid effect and concomitant elements have bean studied. Standard addition experiments are carried out with potassium chloride. The percentage recoveries are 94.7%-109.8%. The relative standard deviation is 4.2%. The analytical range accords with sodium quality control standard of CFFR. The precision corresponds to the international analytical method in sodium coolant reactor.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期366-369,共4页
Spectroscopy and Spectral Analysis
