| 张庆,赵烨,徐翠华.京津冀接壤区域土壤中238U放射性空间分布研究[J].中华放射医学与防护杂志,2015,35(9):692-695 |
| 京津冀接壤区域土壤中238U放射性空间分布研究 |
| 238U Radioactivity distribution in soils in the Beijing-Tianjin-Hebei Region |
| 投稿时间：2015-03-13 |
| DOI：10.3760/cma.j.issn.0254-5098.2015.09.013 |
| 中文关键词: 土壤放射性 空间分布 HPGe γ能谱仪 地理信息系统(GIS) |
| 英文关键词:Soil radioactivity Spatial distribution HPGe γ-ray spectrometry Geographic information system (GIS) |
| 基金项目:国家重点基础研究发展计划973项目(2007CB407302) |
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| 中文摘要: |
| 目的 调查京津冀接壤区域土壤中238U的放射性水平,绘制238U活度浓度空间分布精细图。方法 以10 km×10 km网格法采集京津冀接壤区域土壤样品,用HPGe γ能谱仪测量土壤样品中238U的活度浓度,借助MAPGIS软件绘制京津冀接壤区域表层土壤中238U的活度浓度分布图。结果 共采集和测量了416份土壤样品,238U的活度浓度范围为0.1~106.0 Bq/kg,平均值为34.7 Bq/kg,238U活度浓度分布图显示京津冀接壤区域表层土壤大部分地区238U活度浓度在15~55 Bq/kg之间。结论 绘制京津冀接壤区域238U的放射性空间分布,以图形显示238U活度浓度分布,对该区域环境放射性评价以及放射性物质转移研究等具有重要意义。 |
| 英文摘要: |
| 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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