Assessment of radioactivity level and associated radiation exposure in topsoil from eastern region of Shangrao Prefecture, China

作者：Yang, Baolu; Zhou, Qiang; Zhang, Jing; Li, Zeshu; Li, Wenhong; Tuo, Fei^*

来源：Journal of Radioanalytical and Nuclear Chemistry, 2019, 319(1): 297-302.

DOI：10.1007/s10967-018-6298-y

• Natural radionuclides
• Cs-137
• Activity ratios
• Radiation exposure
• Soil

Natural and fallout radioactivity were estimated in topsoil samples collected in eastern region of Shangrao Prefecture, China. The average activity concentrations of U-238, Ra-226, Th-232 and K-40 in the soil were nearly 2 times the world median value and Chinese average. The Cs-137 activity concentration decreased compared with the previously reported value in the same region. The absorbed dose rate and annual effective dose rate estimated in the study area are found to be both higher than the world average values. U-238/Ra-226 and Th-232/Ra-226 activity ratios were also considered in this study.

• 出版日期2019-1
• 单位中国疾病预防控制中心; 中国疾病预防控制中心辐射防护与核安全医学所