Comparative analysis of environmental γ radiation dose rate measurement results of social testing institutions in Jiangsu Province, China
10.13491/j.issn.1004-714X.2025.01.011
- VernacularTitle:江苏省社会化检测机构环境γ辐射剂量率测量比对结果分析
- Author:
Xiang ZHANG
1
;
Dandan HE
1
;
Zhendong WANG
1
Author Information
1. Radiation Protection Association of Jiangsu Province, Nanjing 210036 China.
- Publication Type:OriginalArticles
- Keywords:
Social testing institution;
Environmental γ radiation dose rate;
Measurement comparison;
Z-score method
- From:
Chinese Journal of Radiological Health
2025;34(1):67-72
- CountryChina
- Language:Chinese
-
Abstract:
Objective To identify issues and summarize experiences through the analysis and discussion of the current measurement comparison activity, and to improve the radiation detection ability of the social radiation environment detection institutions in Jiangsu Province, China. Methods Fixed measurement points were established. The institutions were assigned to different groups and carried out measurements one-by-one on site. For cosmic ray response value, each institution measured and recorded 50 original data; for γ dose rate in fields, roads, and indoor environments, each reference institution measured and recorded 10 original data. The institutions calculated the monitoring results independently, and the organizer’s expert group checked the results to ensure that there were no calculation errors. Gross errors were eliminated by Grubbs test, and the comparison results were evaluated by Z-score method (median/normalized interquartile range). Results Among the 75 measurement results (excluding the cosmic ray response values), 94.7% were rated as “satisfactory”, 5.3% as “problematic”, and none as “unsatisfactory”. The “problematic” results involved two FH40G γ radiation dose rate meters and one AT1121 γ radiation dose rate meter. Conclusion The cosmic ray response value of the instrument does not necessarily affect the comparison and evaluation of environmental γ radiation dose rate measurement results. AT1121 γ radiation dose rate meter may not be suitable for measuring the air-absorbed dose rate of γ radiation in general environment.
