摘要
对多家实验室测量属性相同的盲样进行计量比对,考察测量结果的一致性和准确性,实现对各参比实验室的测量仪器、操作程序、参比人员和日常质控水平等测量准确性保障全要素的检验。2017~2018年,组织实施了中国广核集团水中多γ放射性核素的比活度测量比对,中国广核集团的6大核电基地,15家流出物或环境监测实验室参加了比对,共报送了23份比对数据,具有较强代表性。对报送的比对数据分别按照相对偏差比较法、En评价方法、Z比分数法进行了分析。根据参比实验室的实际质控需要与测量质量提升目标,结合En评价法与Z比分数法建立了合格性判定的综合评价准则。基于该准则,参比实验室测量57Co、137Cs和241Am核素的比活度结果合格率为95. 7%;测量109Cd和60Co核素的比活度结果合格率为91. 3%。
In order to examine the accuracy and consistency of measurement results in measurement laboratories,measurement comparison had been organized to measure the same sample with the same properties between multiple laboratories. After the comparison,a full-factor check for levels of the measuring instruments,measuring personnel,operating procedures and daily quality control of each participating laboratory had been achieved. From 2017 to 2018,the comparison of radioactivty analysis of the gamma radionuclides in the water of China General Nuclear Power Group was organized and implemented. 15 laboratories from 6 major nuclear power bases participated in the comparison,and submitted 23 comparison results. The data were analyzed according to the relative deviation comparison method,En evaluation method and the Z-scores method. Finally,in order to compare the advantages and disadvantages of the comparison results,combined with the special situation in the field of nuclear power,the eligibility of the comparison results had been distinguished based on the Enevaluation and Z-scores comprehensive evaluation method. Based on the evaluation criteria,the pass rate of the nuclide57 Co,137 Cs and241 Am is 95. 7%;the pass rate of the nuclide109 Cd and60 Co is 91. 3%.
作者
杨志杰
刘皓然
梁珺成
朱达斌
王南萍
YANG Zhi-jie;LIU Hao-ran;LIANG Jun-cheng;ZHU Da-bin;WANG Nan-ping(China University of Geosciences,Beijing 100083,China;National Institute of Metrology,Beijing 100029,China;Suzhou Nuclear Power Research Institute,Suzhou,Jiangsu 215004,China)
出处
《计量学报》
CSCD
北大核心
2019年第5期914-919,共6页
Acta Metrologica Sinica
基金
国家重点研发计划重点专项(2017YFF0206304)
关键词
计量学
水中γ核素
放射性活度
测量比对
metrology
gamma radionuclide in water
radioactivty
comparison
作者简介
第一作者:杨志杰(1990-),男,内蒙古赤峰人,中国地质大学(北京)在读博士研究生,主要研究方向为放射性活度计量。Email: yangzj_nim@126.com;通讯作者:梁珺成(1981-),男,四川绵阳人,中国计量科学研究院副研究员,主要从事放射性活度计量方面的研究工作。Email: liangjc@nim.ac.cn.
