Evaluation result of radionuclide γ-spectrometry in 2016
10.3760/cma.j.issn.0254-5098.2017.12.010
- VernacularTitle:2016年度放射性核素γ能谱分析能力考核结果
- Author:
Zeshu LI
1
;
Fei TUO
;
Jing ZHANG
;
Qiang ZHOU
Author Information
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
- Keywords:
Radionuclides;
γ-spectrometry;
Relative deviation;
Z-score;
U-score
- From:
Chinese Journal of Radiological Medicine and Protection
2017;37(12):928-932
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the radionuclide measurability and analyzability of the γ-spectrometry laboratories in radiological technology institutions countrywide,ensure the quality of radionuclide γ-spectrometry and outlook the evaluation work in γ-spectrometry.Methods The 2016 annual evaluation of radionuclide γ-spectrometry was carried,and the accuracy and precision of 232Th,40K and 137Cs,activity concentration in soil samples were summarized and analyzed in γ-spectrometry laboratories of radiological technology institutions countrywide.Results Of received 45 revaluation receipts,43 were effective and the other two were ineffective due to the suspension of the evaluation.The relative deviation of the activity concentration values of 232Th,40K and 137Cs given by most of the institutions were within the range of ± 20％,only with two measurements beyond 20％.The evaluation results from the 43 participants were qualified with the overall qualified rate of 100％,of which five were excellent accounting for 11.6％ of all.Conclusions All of the elevation results submitted were accurate,showing better measurability.However,some submittals deviated from the references to some degree.Henceforth,it is necessary to strengthen experimental operation and data processing according to the defend procedures and improve the accuracy and precision of measurement results.
