Uncertainty evaluation of strontium-90 analysis in biological samples

Fei CHEN; Liangliang YIN; Xiangyin KONG; Xianzhang SHAO; Baoming SHEN; Yanqin JI

doi:10.11889/j.1000-3436.2016.rrj.34.010701

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Uncertainty evaluation of strontium-90 analysis in biological samples

更新时间：2021-12-10

- Uncertainty evaluation of strontium-90 analysis in biological samples
- Journal of Radiation Research and Radiation Processing Vol. 34, Issue 1, Pages: 10701(2016)
- 作者机构：
  
  1.中国疾病预防控制中心辐射防护与核安全医学所辐射防护与核应急中国疾病预防控制中心重点实验室北京 100088
  2.China CDC Key Laboratory of Radiological Protection and Nuclear Emergency,National Institute for Radiological Protection, China CDC, Beijing 100088, China
- 作者简介：
- 基金信息：
- DOI：10.11889/j.1000-3436.2016.rrj.34.010701
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Fei CHEN, Liangliang YIN, Xiangyin KONG, et al. Uncertainty evaluation of strontium-90 analysis in biological samples. [J]. Journal of Radiation Research and Radiation Processing 34(1):10701(2016)
DOI：

Fei CHEN, Liangliang YIN, Xiangyin KONG, et al. Uncertainty evaluation of strontium-90 analysis in biological samples. [J]. Journal of Radiation Research and Radiation Processing 34(1):10701(2016) DOI： 10.11889/j.1000-3436.2016.rrj.34.010701.

摘要

以茶叶样品锶-90分析为例，详细介绍了生物样品中锶-90分析不确定度的来源，数学模型的建立，标准不确定度的合成，不确定度分量以及扩展不确定度的计算。深入讨论了各不确定度分量对总不确定度的贡献。结果显示：该茶叶样品锶-90活度的分析结果为(68.8±2.6) Bq/kg，该样品的不确定度主要来自?计数的测量、仪器探测效率和样品化学回收率。

Abstract

In order to completely express the results of Sr-90 analysis, this paper presents the uncertainty evaluation of Sr-90 analysis in biological samples. Determination of Sr-90 in tea ash was taken as an example, the origins of uncertainty were discussed in detail and the mathematical model was established. Uncertainty components, standard uncertainty and expanded uncertainty were respectively calculated as well. Contributions of uncertainty components were also compared. The results showed that the radioactivity of Sr-90 in the tea ash was (68.8±2.6) Bq/kg (,k,=2), and the uncertainty mainly originated from Y-90 beta-counting, detection efficiency of equipment and chemical recovery of the method.

关键词

锶-90不确定度生物样品萃取色层法

Keywords

Sr-90UncertaintyBiological samplesExtraction chromatography

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