| Wu Yunyun,Cui Hongxing,Shang Bing,Liu Jianxiang,Su Xu.Study on groundwater radon concentrations and its dose contribution in some cities in China[J].Chinese Journal of Radiological Medicine and Protection,2016,36(2):129-132,148 |
| Study on groundwater radon concentrations and its dose contribution in some cities in China |
| Received:September 16, 2015 |
| DOI：10.3760/cma.j.issn.0254-5098.2016.02.010 |
| KeyWords:Domestic water Drinking water Groundwater Radon content Dose |
| FundProject:国家科技支撑计划(2013BAK03B05) |
| Author Name | Affiliation | E-mail | | Wu Yunyun | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Cui Hongxing | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Shang Bing | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Liu Jianxiang | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Su Xu | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | suxu@nirp.cn |
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| Abstract:: |
| Objective To investigate the levels and distribution of radon concentrations in groundwater in some representative cities in China, and estimate the effective dose from inhaled radon released from domestic groundwater. Methods A total of 12 cities in 7 provinces (municipalities) were selected, including Beijing, Inner Mongolia, Ningxia, Shaanxi, Henan, Liaoning and Heilongjiang. In total, 73 water samples from groundwater supply were taken. Radon concentrations in water samples were determined by using a continuous radon monitor with air-water exchanger. Results The average radon content in groundwater for drinking was 11.8 Bq/L in 12 cities in 7 provinces, ranging from 1.0 to 63.8 Bq/L. The radon concentrations in 37% water samples exceeded 11.1 Bq/L, the safe limit recommended for drinking water by the United States Environmental Protection Agency (EPA). The radon contents in all of the water samples was lower than the reference level 100 Bq/L recommended by World Health Organization (WHO). The average annual effective dose arising from inhaled radon released from groundwater was 29 μSv (2.4 to 160 μSv). Conclusions Generally, the effective dose from inhaled radon released from groundwater is negligibly low. However, in some areas dominated by granite bedrock, the dose contribution from radon released from groundwater to residents should be routinely monitored. |
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