高纯锗γ能谱仪在石材放射性检测过程中的不确定度评定  

Evaluation of Uncertainty of High Purity Germanium Energy Spectrometer in Process of Radioactive Detection of Stone Materials

作　　者：林婷惠 LIN Ting Hui(Nan’an Institute of Quality and Metrology,Nan’an 362300,Fujian,China;Nan’an Product and Quality Center of Technical and Service,Nan'an 362300,Fujian,China;National Stone and Ceramics Quality Supervision and Testing Center(Fujian),Nan'an 362300,Fujian,China)

机构地区：[1]南安市质量计量检测所,福建南安362300 [2]南安市产品质量技术服务中心,福建南安362300 [3]国家石材建陶产品质量监督检验中心(福建),福建南安362300

出　　处：《质量技术监督研究》2020年第3期10-12,31,共4页Quality and Technical Supervision Research

摘　　要：按GB 6566-2010 《建筑材料放射性核素限量》标准规定,利用实验室高纯锗γ能谱仪对001号石材样品独立进行10次226Ra、232Th、40K比活度值测试并对测量结果进行不确定度评定,通过实验和统计得到各类不确定度评定结果并进行合成,形成不确定度的报告,为有效控制测量过程中的不确定因素提供参考的思路及方法并提高检测结果的准确度与可靠性。According to GB 6566-2010 Radionuclide limits for building materials,the specific activity values of 226Ra、232Th、40K of 001 stone samples were tested independently 10 times by our Laboratory high purity germanium energy spectrometer,and the uncertainty of the measured results was evaluated.Through the experiment and statistics,all kinds of uncertainty evaluation results were synthesized and the uncertainty report was formed.It can provide reference ideas and methods for effectively controlling the uncertain factors in the measurement process and improve the accuracy and reliability of the test results.

关 键 词：高纯锗Γ谱仪 石材 测量不确定度 

分 类 号：TU502[建筑科学—建筑技术科学] TL817.2[核科学技术—核技术及应用]