Analysis of the results from national interlaboratory comparisons of radionuclide analysis by γ spectrometry
10.13491/j.issn.1004-714X.2025.01.009
- VernacularTitle:参加全国放射性核素γ能谱分析能力比对结果分析
- Author:
Yanghai SHI
1
;
Yongyong CHEN
1
;
Yuhua SHI
1
;
Yuansheng LU
1
;
Dezhi HE
1
;
Ping WANG
1
Author Information
1. Guangxi Zhuang Autonomous Region Institute for the Prevention and Treatment of Occupational Disease, Nanning 530021 China.
- Publication Type:OriginalArticles
- Keywords:
Radionuclide;
γ Spectrometry;
Interlaboratory comparison;
Result analysis
- From:
Chinese Journal of Radiological Health
2025;34(1):55-60
- CountryChina
- Language:Chinese
-
Abstract:
Objective To verify the accuracy of γ spectrometry by analyzing the results of national interlaboratory comparisons of radionuclide analysis by γ spectrometry from 2018 to 2023. Methods A statistical analysis was conducted on the results from multiple years of participation in the national interlaboratory comparisons of radionuclide analysis by γ spectrometry. The measurement results of radionuclide specific activities in soil were analyzed to provide technical support for improving the capability to analyze radionuclides in soil. Results The laboratory participated in six interlaboratory comparisons and conducted 23 radionuclide analyses by γ spectrometry from 2018 to 2023. The relative deviation was −12.20% to 8.11%, the |Ztest| was 0 to 0.61, the Utest was 0 to 0.62, and the Urel was 0.07 to 0.12. The overall pass rate was 100% and the excellent rate was 33.3%. In addition, 21 of the 23 (91.3%) radionuclide analyses showed full scores in experiment operation. However, the total scores were relatively low due to multiple oversights and lack of rigor in the preparation of the test reports, which prevented the laboratory from qualifying for the excellence evaluation process, resulting in a relatively low excellent rate. Conclusion The interlaboratory comparisons indicate that the measurements of radionuclides in this laboratory were all qualified, with full scores for experiment operation in several analyses. These results demonstrate that the soil radionuclide analysis system based on γ spectrometry is reliable and stable.
