[火焰原子发射光谱法测定钠中的钾]

[Determination of potassium in sodium by flame atomic emission spectroscopy].

作者信息

Xie C, Wen X, Jia Y, Sun S

机构信息

China Institute of Atomic Energy, P.O. Box 275(92), 102413 Beijing.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):366-9.

PMID:12947670

Abstract

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 inTerferences from matrix sodium, acid effect and concomitant elements have been 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.

摘要

钠在中国实验快堆（CEFR）中用作冷却剂。钠中的钾会对反应堆的热性能产生影响。已开发出一种通过火焰原子发射光谱法测定钠中钾的分析方法。钠样品用超声加湿器溶解。研究了仪器的工作条件以及基体钠、酸效应和共存元素的干扰。用氯化钾进行标准加入实验。回收率为94.7% - 109.8%。相对标准偏差为4.2%。分析范围符合中国实验快堆钠的质量控制标准。该精密度与钠冷却剂反应堆的国际分析方法相当。