| Wu Yunyun,Cui Hongxing,Shang Bing,Zhang Qingzhao.Preliminary investigation of radon concentration in drinking water in 31 cities of China[J].Chinese Journal of Radiological Medicine and Protection,2021,41(5):358-362 |
| Preliminary investigation of radon concentration in drinking water in 31 cities of China |
| Received:December 25, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.05.007 |
| KeyWords:City Drinking water Public supply water Radon concentration |
| FundProject: |
| 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 | hxcuicn@163.com | | 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 | | | Zhang Qingzhao | 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 | |
|
| Hits: 1945 |
| Download times: 1146 |
| Abstract:: |
| Objective To obtain the distribution characteristics of radon levels in drinking water in cities of China and analysis their influencing factors. Methods A total of 31 cities were selected and 406 tap water samples were collected in accordance with the sampling plan based on administrative division. Radon concentrations in the water samples were determined by using RAD7 H2O measuring devices, and the closed loop liquid-gas balance method and grab method. The radon concentrations in the gas loop were measured by using semiconductor detector. After four measurement periods, radon concentrations in water were calculated. Results The arithmetic mean of radon concentrations in drinking water from 31 cities was (4.92±9.44) Bq/L and the geometric mean (0.71±7.77) Bq/L,ranging from less than the lower detection limit (LLD) to 43.15 Bq/L. For 84.2% of drinking water samples, radon concentrations were less than US EPA recommended 11.1 Bq/L, all lower than the EU-recommended value of 100 Bq/L. Conclusions The radon concentrations in drinking water are higher in northeastern, northwestern, southwestern, northern China than those in southern, central China and eastern China. The factors influencing radon concentrations in drinking water are closely related to geological structure and water source type. Compared with the global values, the radon concentrations in drinking water in our cities are low and safe in general in China. |
| HTML View Full Text View/Add Comment Download reader |
| Close |
|
|
|
