期刊文献+

低水平放射性测量的判断限和探测限 被引量:1

Decision threshold and detection limit in low-levels of radioactivity measurements
原文传递
导出
摘要 目的对低本底情况下放射性测量的判断限和探测限的计算方法进行讨论。方法基于对18个生物样品的α谱仪测量数据,分别用IAEA RSG1. 2、美国NUREG1576和IAEA AQ48号报告中推荐的判断限和探测限相关公式进行了判断和比较。结果通过比较分析发现对于本底计数较低的情况,NUREG1576和IAEA AQ48号中推荐的公式相较于RSG1. 2中的公式更加保守,根据不同的公式进行判断部分数据给出的结果可以截然不同。结论在测量水平接近本底的情况下,应该重视判断限和探测限的应用,根据测量的实际情况进行判断(如本底计数、本底测量时间、样品测量时间等因素)选取合适的公式,从而保证对测量结果的判断更加可靠。 Objective The calculation methods for decision threshold and detection limit of radioactivity measurement for low background were discussed. Methods Based on the data from 18 biological samples measured by Alpha spectrometer,formulas of decision threshold and detection limit given in RSG1. 2( IAEA),NUREG 1576( USA) and AQ48( IAEA) were used and discussed. Results Parts of the results decided by these three kinds of formulas would be entirely different,which indicated that formulas of NUREG 1576 and AQ48 were much more conservative than the formulas of RSG1. 2 for low background counts( as < 100). Conclusion To ensure the reliability when judging the measured data,formulas of decision threshold and detection limit must be chosen according to the actual condition( such as background counts,background count time and gross count time,etc.),especially in low-level radioactivity measurements.
作者 汪传高 骆志平 庞洪超 尹云云 郑国文 徐勇军 娄海林 王仲文 刘瑞瑞 WANG Chuangao;LUO Zhiping;PANG Hongchao;YIN Yunyun;ZHENG Guowen;XU Yongjun;LOU Hailin;WANG Zhongwen;LI Ruirui(China Institute of Atomic Energy,Beijing 102413 China;Washington University School of Medicine)
出处 《中国辐射卫生》 2018年第6期590-594,共5页 Chinese Journal of Radiological Health
关键词 判断限 探测限 低本底计数 Decision Threshold Detection Limit Low Background Counts
  • 相关文献

同被引文献3

引证文献1

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部