摘要
建立用石墨炉原子吸收法测定压水堆一回路冷却剂环境中痕量锌的方法。研究了仪器的工作条件、空白的选择、锌溶液稳定性及硼酸、氢氧化锂的影响。本方法的回收率在96.7%~105.0%之间,2.0μg/L锌的相对标准偏差为3.7%,检出限为0.12μg/L。用本方法为某压水堆实验回路中进行了锌的测定,取得了满意的结果。
Amethod has been developed to determine trace zinc in primary circuit of pressurized-water reactor by Graphite furnace atomic absorption spectrometry.The working conditions of the instrument,the choice of blank solution,the effects of boric acid and lithium hydroxide,and the stability about zinc has been studied in this paper.The recovery percentage is 96.7%~105.0%.The relative standard deviation for 2μg/L Zn is 3.7%,and the detection limit is 0.12μg/L.The method has been applied to determine zinc in the experimental primary circuit of PWR,and the results are satisfied.
出处
《核科学与工程》
CSCD
北大核心
2014年第4期433-436,443,共5页
Nuclear Science and Engineering
关键词
一回路冷却剂
锌
石墨炉原子吸收
primary circuit
zinc
Graphite furnace atomic absorption
