期刊
APPLIED RADIATION AND ISOTOPES
卷 94, 期 -, 页码 355-362出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2014.09.002
关键词
Measurement uncertainty; Alpha-particle spectrometry; Radiochemical separation; Uranium in water
类别
资金
- Turkish Atomic Energy Authority [A2. H4. P1. 03]
Qualifications of uncertainties associated with the measurement of specific activity concentration of uranium radioisotope (U-238) in water samples by alpha-particle spectrometry are presented. Possible sources of uncertainty are identified and quantified in the activity concentration measurements of U-238 isotope; the major source being the statistical counting uncertainty as expected. The combined relative standard uncertainty U(a(238U)) of the measurement was calculated as 1.4 Bq kg(-1) (7.9%) for the investigated NPL sample. The accuracy and precision of recommended procedure were checked analysing six spiked water samples supplied from IAEA-proficiency test exercises. The results were evaluated in terms of relative bias, z-score, u-score, trueness and precision. These results show that the activity values and their uncertainties are in good agreement with recommended values. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据