title: Natural and artificial radionuclide measurements and radioactivity assessment of soil samples in eastern Sichuan province (China).
abstract: The activity concentrations of natural and artificial radionuclides were measured in the eastern region of Sichuan province (China). One hundred and ninety-three soil samples from this region were collected and analysed by high-purity germanium gamma spectrometry. The measured results show that the average radioactivity concentrations of (226)Ra, (232)Th, (40)K and (137)Cs in the soil samples are 26, 49, 440 and 6 Bq kg(-1), respectively. The calculated average radium equivalent activity is 130 Bq kg(-1), which is less than the recommended limit of 370 Bq kg(-1). The absorbed dose rate and annual effective dose are 60 nGy h(-1) and 74 µSv, respectively. This is the first time the absorbed dose rate in the east region of Sichuan has been mapped. Overall, the environmental radiation background is greater in the southern part of the area studied than in the northern.
authors: College of Physical Science and Technology, Key Laboratory of Radiation Physics and Technology,  Ministry of Education, Sichuan University, Chengdu 610064,  China.
authors: Zhonghai
authors: Z
authors: Wang
authors: Jun
authors: J
authors: He
authors: Yu
authors: Y
authors: Du
authors: Yang
authors: Y
authors: He
authors: Zhiqian
authors: Z
authors: Li
authors: Zhihua
authors: Z
authors: Chen
authors: Chaowen
authors: C
authors: Yang
mesh_terms: D001417:Background Radiation; D002588:Cesium Radioisotopes / Q000032:analysis*; D002681:China; D005857:Germanium; D011197:Potassium Radioisotopes / Q000032:analysis*; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis*; D012987:Soil / Q000032:analysis; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D011197:Potassium Radioisotopes; D012987:Soil; D012990:Soil Pollutants, Radioactive; D005857:Germanium; D013910:Thorium; D011883:Radium