| 激光荧光法测定土壤中铀的不确定度评定 |
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| 引用本文： | 黄聪,董传江,王力,肖峰,李莉,郑洪龙.激光荧光法测定土壤中铀的不确定度评定[J].铀矿地质,2020(1):52-58,72. |
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| 作者姓名： | 黄聪 董传江 王力 肖峰 李莉 郑洪龙 |
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| 作者单位： | 中国核动力研究设计院;四川省核设施退役与放射性废物治理工程实验室 |
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| 摘 要： | 介绍了激光荧光法测定土壤中总铀含量的不确定度评定方法。建立了不确定度的测量模型,对不确定度来源进行了分析,并对不确定度分量进行量化,计算出环境级土壤样品总铀含量测量的扩展不确定度。结果表明,某0.1 g环境土壤干样总铀含量测量的扩展不确定度为13.04%(k=2),占主导作用的不确定度来源为样品荧光计数测量不确定度。
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| 关 键 词： | 激光荧光法 土壤 铀 不确定度 |
Uncertainty Evaluation on Soil Uranium Measurement by Laser Fluorescence Method |
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| HUANG Cong,DONG Chuanjiang,WANG Li,XIAO Feng,LI Li,ZHENG Honglong.Uncertainty Evaluation on Soil Uranium Measurement by Laser Fluorescence Method[J].Uranium Geology,2020(1):52-58,72. |
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| Authors: | HUANG Cong DONG Chuanjiang WANG Li XIAO Feng LI Li ZHENG Honglong |
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| Institution: | (Nuclear Power Institute of China,Chengdu,Sichuan 610041,China;Sichuan Engineering Laboratory for Nuclear Facilities Decommissioning and Radwaste Management,Chengdu,Sichuan 610041,China) |
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| Abstract: | The uncertainty evaluation method for determining total uranium in soil by laser fluorescence was introduced. By establishing the measurement model of uncertainty, the sources of uncertainty were analyzed, the uncertainty components were quantified, and the expanded uncertainty of total uranium measurement was calculated for environmental grade soil samples. The results showed that the expanded measurement uncertainty of total uranium content in 0.1 gram of environmental soil dry sample is 13.04 %when the inclusion factor k is assumed to be equal to 2, and the dominant source of uncertainty is the uncertainty of counting measurement of sample by fluorescence. |
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| Keywords: | laser fluorescence method soil uranium uncertainty |
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