Analysis of indoor radon concentration and environmental cumulative dose monitoring results in Shenzhen, China
10.13491/j.issn.1004-714X.2025.06.006
- VernacularTitle:深圳市室内氡浓度及环境累积剂量监测结果分析
- Author:
Kuan FAN
1
;
Jinfeng HUANG
1
;
Jiancong ZHU
1
;
Miaomiao YAN
1
;
Yongqin LIN
1
;
Haijun WANG
1
Author Information
1. Shenzhen Prevention and Treatment Center for Occupational Diseases, Shenzhen 518020, China.
- Publication Type:OriginalArticles
- Keywords:
Solid state nuclear track method;
CR-39 detector;
Indoor radon concentration
- From:
Chinese Journal of Radiological Health
2025;34(6):819-823
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate indoor radon concentrations and environmental cumulative doses in residential and office units in Shenzhen, and estimate the average annual effective dose, and to provide data for assessing public health risks. Methods Within the 11 administrative districts of Shenzhen (including the Shenzhen-Shanwei Special Cooperation Zone), 17 residential units and 3 office units were randomly selected as monitoring sites in each district. The units selected represented buildings of different ages and various floors on which the units were located. Radon detectors and environmental cumulative dosimeters were deployed for monitoring. Results The indoor radon concentrations in Shenzhen during the two monitoring periods were (36.6 ± 16.5) Bq/m3 and (19.8 ± 15.3) Bq/m3, respectively. The environmental cumulative doses for the two monitoring periods were (0.33 ± 0.07) mSv and (0.25 ± 0.04) mSv, respectively. The estimated average annual effective dose due to indoor radon in Shenzhen was 0.92 mSv. Conclusion All monitored indoor radon concentrations in Shenzhen were below the national standard of China. The indoor radon concentrations exhibited significant regional variations, were higher in spring than in summer, and showed no statistically significant differences across buildings of different ages or units of various floors. The trends in indoor radon concentrations and environmental cumulative doses were highly consistent. The average indoor radon concentration in Shenzhen was lower than both the global and national levels, indicating a low risk of internal radiation exposure from radon.
