238U Radioactivity distribution in soils in the Beijing-Tianjin-Hebei Region
10.3760/cma.j.issn.0254-5098.2015.09.013
- VernacularTitle:京津冀接壤区域土壤中238U放射性空间分布研究
- Author:
Qing ZHANG
;
Ye ZHAO
;
Cuihua XU
- Publication Type:Journal Article
- Keywords:
Soil radioactivity;
Spatial distribution;
HPGe γ-ray spectrometry;
Geographic information system (GIS)
- From:
Chinese Journal of Radiological Medicine and Protection
2015;35(9):692-695
- CountryChina
- Language:Chinese
-
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.
