[1]拓飞,张庆,张京,等.2014年度全国放射性核素γ能谱分析质量控制比对[J].国际放射医学核医学杂志,2015,39(5):401-404.[doi:10. 3760 / cma. j. issn. 1673-4114. 2015. 05. 011]
　tuo fei,zhang qing,zhang jing,et al.nationwide intercomparison for radionuclide analyses through γ-spectrometry method in 2014[J].International Journal of Radiation Medicine and Nuclear Medicine,2015,39(5):401-404.[doi:10. 3760 / cma. j. issn. 1673-4114. 2015. 05. 011]
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《国际放射医学核医学杂志》[ISSN:1673-4114/CN:12-1381/R]

卷:
39
期数:
2015年第5期
页码:
401-404
栏目:
论著
出版日期:
2015-09-15

文章信息/Info

Title:
nationwide intercomparison for radionuclide analyses through γ-spectrometry method in 2014
作者:
拓飞; 张庆; 张京; 周强; 李文红; 徐翠华; 苏旭
100088 北京，中国疾病预防控制中心辐射防护与核安全医学所，辐射防护与核应急中国疾病预防控制中心重点实验室
Author(s):
tuo fei;  zhang qing;  zhang jing;  zhou qiang;  li wenhong;  xu cuihua;  su xu.
key laboratory of radiological protection and nuclear emergency, china cdc, national institute for radiological protection, chinese center for disease control and prevention, beijing 100088, china
关键词:
放射性同位素; 质量控制; γ能谱; 比对
Keywords:
radioisotopes;  quality control;  γ-spectrometry;  intercomparison
DOI:
10. 3760 / cma. j. issn. 1673-4114. 2015. 05. 011
摘要:
目的 提高放射卫生技术服务机构检测人员的技术水平和分析能力，进一步促进全国γ能谱实验室放射性核素检测技术的发展。方法 组织2014年度全国放射性核素γ能谱分析方法比对，比对基质为土壤样品，要求参加比对的单位分析测量样品中放射性核素40k、137cs、208tl 和228ac的比活度。结果 提交结果报告的31家比对单位中，比对结果合格的有26家，不合格的有5家，有2家单位的比对结果获得优秀。所有参加比对的单位的整体合格率为84%（26/31），优秀率为6%（2/31）。结论 参加比对的多数单位具备较高的检测能力和水平，其出具的检测结果准确可靠。在日常工作中需加强对γ谱仪的维护保养，重视实验室间定期刻度，并注意采用正确的核衰变参数进行计算。
Abstract:
objective to improve the technical levels and analytical ability of γ-spectrometry analysts for agencies engaged in radiation measurement and assessment and to promote further advances of monitoring methods for γ-spectrometry analysis laboratories in our nation. methods a nationwide intercomparison on γ-spectrometry measurement for activity concentration of 40k, 137cs, 208tl, and 228ac in soil was organized in 2014. results thirty-one laboratories have participated in this intercomparison. among these laboratories, 26 laboratories showed“acceptable” results, which include 2 laboratories with “excellent”status, while 5 laboratories showed “unacceptable” results. the production percentages of “acceptable”results and“excellent”status are 84％（24/31） and 6％（2/31）, respectively. conclusions the measurement values reported by most of the laboratories involved in this intercomparison showed a good agreement with the reference values. therefore, these values may provide a reliable measurement result during measurement in γ-spectrometry analyses. however, proper operation of γ-spectrometers and its regular calibration must be further emphasized to obtain accurate measurements to improve the calculation of nuclear data in some laboratories.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目：国家科技支撑计划（2013bak03b05）
通信作者：苏旭（email：suxu@nirp.cn）
更新日期/Last Update: 2015-09-15