全国水体中天然放射性核素浓度调查的质量保证

QUALITY ASSURANCE DURING NATIONWIDE SURVEY OF NATURAL RADIOACTIVE CONCENTRATION IN WATERS IN CHINA

本文总结了全国水体中天然放射性核素浓度调查的质量保证工作，内容包括调查中的质量管理、各种核素浓度量值的可追溯性以及实验室分析的质量控制。由本实验室制备的各种参考溶液经中国计量科学研究院等实验室核实，其量值可追溯到国家计量部门。有３１个实验室参加了分析方法的考核，结果表明，Ｕ、Ｔｈ、２２６Ｒａ和Ｋ的分析误差在±１５％以内的实验室分别占９６．８％、９６．８％、８７．１％和８７．１％。全部实验室测定上述核素的误差均小于±３５％。

During the time period of 1983-1990, NEPA organized to carry out the inverstigation on natural environmental radioactivity level all over China. China Institute for Radiation Protection (CIRP) was entgaged as a quality assurance and technical advisory unit.This paper is a summary report of the Quality Assurance Group for the survey of natural radionuclides contents in waters. Quality management during survey, traceableness and comparableness for the values of radionuclides in waters between different laboratories and quality control in laboratories were discused in the paper.