| Chen Fei,Zhang Zhen,Wang Xuetao,Shao Xianzhang,Li Yuwen.Quality control of gross α and gross β analysis in water[J].Chinese Journal of Radiological Medicine and Protection,2020,40(8):618-622 |
| Quality control of gross α and gross β analysis in water |
| Received:February 10, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.08.008 |
| KeyWords:Gross α and gross β Quality control Precision Accuracy |
| FundProject:环境放射性研究网络中心国际合作项目（I-20-15） |
| Author Name | Affiliation | E-mail | | Chen Fei | National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China | | | Zhang Zhen | National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China | | | Wang Xuetao | National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China | | | Shao Xianzhang | National Institute for Radiological Protection, China CDC, Beijing 100088, China | | | Li Yuwen | National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China | lyw_2006_lyw@163.com |
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| Abstract:: |
| Objective To improve the precision and accuracy of gross radioactivity detection in water, and to improve the radiological health and environmental monitoring level of each laboratory, it is necessary to carry out method verification and quality control. Methods The thick source method for gross α and the thin source method for gross β analysis were used to analyze the actual samples. After multiple tests, the precision of the detection was calculated. Through the spike recovery test and the comparison sample analysis of the national radiological health in 2019, the accuracy analysis of the method was performed. Results In the precision experiment, the relative standard deviations of the gross α and gross β results were 23% and 13%, respectively. The three spike recoveries were 103.1%, 103.5%, and 105.8%, respectively. The relative errors of gross α and gross β compared with the reference value were 0.92% and 9.4%, respectively. All the result reflected the high accuracy of the method. Conclusions The relative standard deviations, recoveries, and relative errors in the method validation and quality control were below the limits of the criterion. This work systematically discussed the major factors that may cause errors in the detection, which could further improve the level of radiological health and environmental monitoring. |
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