液体闪烁计数法检测水中氚主要参数测试方法及其评价  

Measurement and Evaluation of Main Parameters of Tritium in Water by Liquid Scintillation Counting

作　　者：张向阳[1,2,3] 刘福亮[2,3] 彭玉荣 郭华良[2,3] 贾艳琨 张琳[2,3] ZHANG Xiang-yang;LIU Fu-liang;PENG Yu-rong;GUO Hua-liang;JIA Yan-kun;ZHANG Lin(University of Science and Technology of China,Hefei 23006;Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences,Shijiazhuang 050061,China;Key laboratory of Groundwater Science and Engineering,Ministry of National Resources,Zhengding 050803,China)

机构地区：[1]中国科学技术大学,安徽合肥230026 [2]中国地质科学院水文地质环境地质研究所,河北石家庄050061 [3]自然资源部地下水科学与工程重点实验室,河北正定050803

出　　处：《核电子学与探测技术》2021年第4期677-681,共5页Nuclear Electronics & Detection Technology

基　　金：中央级公益性科研院所基本科研业务费专项(SK201908、JYYWF20183501)资助。

摘　　要：对不确定度、精度、检出限等概念在液体闪烁法测量水中氚的分析方法中的意义做了解释,并给出了计算公式。改善液体闪烁计数器测量的品质因子(FOM),增加测量时间,提高电解浓缩倍数和回收率,是提高氚测量水平的主要途径。通过对实验室典型测量条件进行优化.得出在样品测量时间为200~500min时,可获得0.6~1.0TU的最低检测限。The significance of uncertainty,precision,limit detection and other concepts in the analysis method of tritium in water by liquid scintillation method is explained,and the calculation formula is given.Improving the quality factor(FOM)of liquid scintillation counter,increasing the measurement time and increasing the concentration ratio and recovery are the main ways to improve the performance of tritium measurement.By optimizing the typical measurement conditions in the laboratory,the lower limit of detection,0.6~1.0 TU can be obtained when the sample measurement time is 200-500 min.

关 键 词：氚 液体闪烁计数 不确定度 检出限 

分 类 号：O657.4[理学—分析化学]