摘要
介绍了气溶胶中^(210)Po分析不确定度的评定过程,探讨了各个不确定分量对于不确定度的贡献。评定结果显示:环境气溶胶中^(210)Po的分析测量不确定度主要来自于气溶胶样品的取样体积、示踪剂溶液配制和移取、α计数的测量等环节。
Polonium-210, an important natural radionuclide, attracts extensive attention of environmental monitors due to its widely presence in the biosphere and extreme toxicity. In order to determine the uncertainty of polonium-210 analysis in aerosol, the evaluation process of uncertainty was introduced,and the contribution of each component to uncertainty was discussed. Tlie results show that the uncertainty is mainly from the sam-pling volume of aerosol samples, the preparation and transfer of tracer solution, the measurement by a counting and other aspects.
出处
《辐射防护通讯》
2017年第5期28-31,40,共5页
Radiation Protection Bulletin
基金
国家自然科学基金项目(项目号11405071)
关键词
2wPo
不确定度
气溶胶
a能谱分析
Polonium-210
Uncertainty
Aerosol samples
Aalpha spectrum analysis
