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      An analysis of the results of the national assessments of gamma spectrometry of radionuclides, 2014-2021

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          Abstract

          Objective To ensure the accuracy of gamma spectrometer in our laboratory for the analysis of radionuclides in samples and to improve the laboratory personnel’s ability to perform analyses of radionuclides.

          Methods Our laboratory had continuously participated in the national assessments of gamma spectrometry of radionuclides organized by the Chinese Center for Disease Control and Prevention. The samples were measured by a high-purity germanium gamma spectrometer (GEM-MX7080P4). An analysis was performed on the results of the gamma spectrometry assessments from 2014 to 2021.

          Results Our laboratory had an overall qualified rate of 100% (8/8) and an overall excellent rate of 39% (3/8) in the gamma spectrometry assessments from 2014 to 2021. The distribution ranges of RD, Z, U, and U rel for 28 measurements involving radionuclides 208Tl, 228Ac, 232Th, 40K, 238U, and 137Cs were −11.82% to 5.97%, −0.59 to 0.30, 0.02 to 0.92, and 4.33% to 10.49%, respectively.

          Conclusion The methods used in our laboratory for gamma spectrometry of radionuclides are accurate and the testing reports issued by our laboratory are reliable.

          Abstract

          摘要: 目的 保证实验室 γ 能谱仪对样品中放射性核素测定的准确度, 提高实验室人员放射性核素分析检测能力。 方法 连续参加由中国疾病预防控制中心组织的全国放射性核素 γ 能谱分析能力考核, 利用 GEM-MX7080P4 型高纯 锗 γ 能谱仪对样品进行测量, 对 2014—2021 年的 γ 能谱分析能力考核结果进行分析。 结果 本实验室 2014—2021 年 γ 能谱分析能力考核结果总体合格率为 100%(8/8), 总体优秀率为 39%(3/8), 涉及 208Tl、 228Ac、 232Th、 40K、 238U 和 137Cs 放射性核素28 个测量结果的 RDZUU rel 的分布范围分别为−11.82%~5.97%, −0.59~0.30, 0.02~0.92 和4.33%~10.49%。 结论  本实验室利用γ 能谱分析放射性核素方法正确, 出具的检测报告准确可靠。

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          Author and article information

          Journal
          CJRH
          Chinese Journal of Radiological Health
          Chinese Preventive Medical Association (Ji’an, China )
          1004-714X
          01 August 2023
          01 October 2023
          : 32
          : 4
          : 444-449
          Affiliations
          [1] 1Beijing Center for Disease Prevention and Control, Beijing 100013 China
          Author notes
          Corresponding author: MA Yongzhong, Email: myz0905@ 123456126.com
          Article
          j.issn.1004-714X.2023.04.015
          10.13491/j.issn.1004-714X.2023.04.015
          95165948-0092-4c78-a00b-24898761e7c8
          © 2023 Chinese Journal of Radiological Health

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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          Categories
          Journal Article

          Medicine,Image processing,Radiology & Imaging,Bioinformatics & Computational biology,Health & Social care,Public health
          Gamma spectrometry,Assessment,Radionuclide

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