INST2019 (International Nuclear Science and Technology Conference)

4-6 February 2019
Asia/Bangkok timezone
Deadline for full paper revision: 21 May 2019.

Analysis of Radiological Hazards from Surface Soils in Khong Chiam and Sirinthon District Ubon Ratchathani Province

5 Feb 2019, 14:40
1h 10m

Chatuchak, Bangkok 10900, Thailand
Poster Environment

Speaker

Mr Manit Jitpukdee (Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University)

Description

The radiological hazards from natural radionuclides in soil at the border area between the southeast of Thailand and Laos were studied and evaluated. The 33 surface soil samples from Khong Chiam and Sirinthon districts in Ubon Ratchathani province were collected and measured the specific radioactivity of $^{226}$Ra, $^{232}$Th and $^{40}$K. The radioactivity of all soil samples was analyzed from gamma ray spectrums using Hyper-Pure Germanium (HPGe) detector. The results applied for calculating the radiological hazards which were radium equivalent activity (Raeq), absorbed dose rate (D), annual effective dose equivalent (AEDEout) and external hazard index (Hex). The experimental results obtained the radioactivity concentrations in a range of 10.64 to 46.67 Bq.kg$^{-1}$ with average value of 22.82 3.59 Bq.kg$^{-1}$, 6.35 to 44.72 Bq.kg$^{-1}$ with average value of 15.49 $\pm$ 3.57 Bq.kg-1 and 31.22 to 521.57 Bq.kg$^{-1}$ with average value of 130.44 $\pm$ 28.46 Bq.kg$^{-1}$ for $^{226}$Ra, $^{232}$Th and $^{40}$K, respectively. The calculation results of Raeq, D, AEDEout and Hex showed significantly lower than the radiological hazard levels which are recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). The results of this study reveal that people can live and travel along the border area in the southeast of Thailand.

Primary author

Mr Manit Jitpukdee (Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University)

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