| Zhang Qing,Zhao Ye,Xu Cuihua.238U Radioactivity distribution in soils in the Beijing-Tianjin-Hebei Region[J].Chinese Journal of Radiological Medicine and Protection,2015,35(9):692-695 |
| 238U Radioactivity distribution in soils in the Beijing-Tianjin-Hebei Region |
| Received:March 13, 2015 |
| DOI：10.3760/cma.j.issn.0254-5098.2015.09.013 |
| KeyWords:Soil radioactivity Spatial distribution HPGe γ-ray spectrometry Geographic information system (GIS) |
| FundProject:国家重点基础研究发展计划973项目(2007CB407302) |
| Author Name | Affiliation | E-mail | | Zhang Qing | 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 | | | Zhao Ye | 北京师范大学环境学院 | zhaoye@bnu.edu.cn | | Xu Cuihua | 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 | |
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| Abstract:: |
| Objective To survey the 238U radioactivity level in the surface soil in the Beijing-Tianjin-Hebei Border (BTHB) region, and to prepare a high resolution distribution map of 238U activity concentrations. Methods The soil samples were collected in a grid (10 km×10 km). The activity concentrations of 238U in soil samples were measured by using HPGe γ spectrometry. The distribution of the activity concentrations of 238U in soil samples was mapped by the aid of MAPGIS software. Results In total, 416 samples were collected and measured. The activity concentrations of 238U were in the range of 0.1-106.0 Bq/kg, with an average of 34.7 Bq/kg. The 238U activity concentration distribution map showed that 238U activity concentration was in the range of 15-55 Bq/kg mostly on the surface soil in the BTHB region. Conclusions The map of 238U activity concentration shows the distribution of 238U activity concentration in the BTHB region. It is of importance to map the distribution of 238U activity concentration in the BTHB region, by converting a huge amount of data into the simple and intuitive graphics, and for evaluating the regional environmental radioactivity and studying the radioactive substance migration within the locality. |
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