Determination of radionuclide levels in food and assessment of effective dose in Beijing, China
10.13491/j.issn.1004-714X.2025.05.017
- VernacularTitle:北京市食品中放射性核素含量测定及剂量评估
- Author:
Huan WANG
1
;
Yaru SUN
1
;
Meinan YAO
1
;
Yongzhong MA
1
;
Shuchang YAN
2
;
Hui ZHANG
2
;
Zhen WU
2
;
Bin BAI
1
Author Information
1. Beijing Center for Disease Prevention and Control, Beijing 100013, China.
2. Department of Engineering Physics, Tsinghua University, Beijing 100084, China.
- Publication Type:OriginalArticles
- Keywords:
Food;
Radionuclide;
Chinese reference adult phantom;
Effective dose
- From:
Chinese Journal of Radiological Health
2025;34(5):733-739
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the levels of radionuclides in food in Beijing, China, and assess the committed effective dose to local residents from food intake. Methods From 2021 to 2022, a total of 65 food samples across 7 categories were collected in Beijing. The activity concentrations of radionuclides, including 137Cs, 210Pb, 238U, 228Ra, 226Ra, 40K, 90Sr, 210Po, 3H and 14C, were measured using gamma spectrometry and radiochemical methods. By combining the monitoring results with dietary consumption data of Beijing residents and the internal dose coefficients for Chinese reference adult phantom, the committed effective dose was estimated. Results The levels of radionuclides in food in Beijing were within the normal background range, consistent with related surveys in China and abroad, with activity concentrations below national standard limits. No significant differences were found in the activity concentrations of 137Cs, 238U, 228Ra, 226Ra and 40K between food samples collected from key areas and those from control areas (P > 0.05). The committed effective doses calculated according to internal dose coefficients for Chinese reference adult male phantom and GB 18871-2002 were 0.26 mSv and 0.19 mSv, respectively. Based on the Chinese reference adult male phantom, the majority of the committed effective dose was attributed to 210Pb (45.1%), 228Ra (37.1%), 210Po (12.3%), and 226Ra (4.7%). Conclusion The levels of radionuclides in food in Beijing fluctuated within the background range, resulting in a low radiation dose burden to the population.
