Natural radioactivity survey on soils originated from southern part of Thailand as potential sites for nuclear power plants from radiological viewpoint and risk assessment

作者：Kritsananuwat Rawiwan; Arae Hideki; Fukushi Masahiro; Sahoo Sarata Kumar; Chanyotha Supitcha

来源：Journal of Radioanalytical and Nuclear Chemistry, 2015, 305(2): 487-499.

DOI：10.1007/s10967-015-3994-8

• Natural radionuclides
• Soil
• gamma-Spectroscopy
• ICP-MS
• Radiological risk

Natural radioactivity in surface soil samples collected at potential sites from southern part of Thailand to set up nuclear power plants has been investigated. U-238 and Th-232 were determined by inductively coupled plasma mass spectrometry whereas gamma-ray spectroscopy was used for K-40 determination. The activity concentrations for U-238, Th-232 and K-40 varied in range from 4 to 122, 6 to 170 and 5 to 1,422 Bq kg(-1), respectively. The large variation of radionuclide concentrations showed heterogeneous distribution that could be attributed to geological origin. The radiation hazard parameters were estimated from activity concentration of U-238, Th-232 and K-40 in accordance with the UNSCEAR 2000. Data obtained indicated that soils in the study areas did not pose any significant radiological health hazard to the local population.

• 出版日期2015-8