南宁城区室外氡浓度变化规律研究

doi:10.27045/j.1000-8187.202605007

Abstract

Abstract: To investigate the levels and variation patterns of outdoor atmospheric radon concentration in Nanning, Guangxi, continuous monitoring was conducted over two one-year periods at an urban central site of Nanning, covering April 2023-March 2024 and October 2024-September 2025. Three mainstream domestic and international radon monitors were deployed for synchronous measurements. Combined with meteorological data, the dynamic variations of radon concentration and its key influencing factors were thoroughly analyzed. The acquisition rate of valid monitoring data was 95.0%. The results indicated that the average outdoor atmospheric radon concentration in urban Nanning from 2023 to 2025 was (14.5±9.7) Bq/m³, exhibiting distinct diurnal and seasonal variations. For diurnal cycles, the radon concentration peaked at 6:00-7:00 (18.0 Bq/m³) and reached its minimum at 14:00-15:00 (11.7 Bq/m³). Seasonally, the lowest concentrations occurred from June to August, while the highest values appeared from November to February. Hourly correlation analysis revealed that air temperature and wind speed were negatively correlated with radon concentration, while the Air Quality Index (AQI) showed a positive correlation. This study provides scientific data support for radon exposure dose assessment, atmospheric boundary layer research, and environmental radiation monitoring in the Nanning area.

Key words: atmosphere, radon concentration, influencing factors, continuous measurement, air quality index

CLC Number:

X591

LIN Chen, ZHAN Liqun, SU Chuancheng, XU Mingfa, XU Pin, PENG Wenbin, CHANG Qing. A study on the variation patterns of outdoor radon concentration in the Nanning region[J].RADIATION PROTECTION, 2026, 46(5): 437-445.

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A study on the variation patterns of outdoor radon concentration in the Nanning region

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