4-6 February 2019
Centara Grand at Central Ladprao
Asia/Bangkok timezone
Deadline for full paper revision: 21 May 2019.

Risk Assessment to Natural Radiation Exposure from Soil Samples in The Jasmine Rice Cultivated Area, Roi Et Province, Thailand

5 Feb 2019, 14:40
1h 10m
Centara Grand at Central Ladprao

Centara Grand at Central Ladprao

Chatuchak, Bangkok 10900, Thailand
Poster Environment Poster 2

Speaker

Mr Purit Quinram (Program of Physics, Faculty of Liberal Arts and Science, Roi Et Rajabhat University, Roi Et 45120, Thailand)

Description

Roi Et is one of the provinces with rice farming and exported to many countries around the world. In order to assess the radiation risk index from Jasmine rice cultivated soils, 175 samples in Roi Et province were measured using the gamma ray spectrometry technique for estimating the natural radioactivity levels. The specific activity of Ra-226, Th-232 and K-40 was found from 7.14 to 29.02 Bq/Kg with a mean value of 16.92 ± 1.16 Bq/Kg, 7.24 to 33.40 Bq/Kg with a mean value of 16.99 ± 2.24 Bq/Kg and 18.17 to 129.65 Bq/Kg with a mean value of 46.95 ± 6.79 Bq/Kg, respectively. However, the values of radium equivalent activity (Raeq), the external hazard index (Hex), the gamma-absorbed dose rate (D) and the annual effective dose equivalent (AEDEout) were also calculated to evaluate radiological hazards. The average values of Raeq, Hex, D and AEDEout were found to be 44.83 Bq/Kg, 0.12, 20.03 nGy/h and 0.02 mSv/y, respectively. From the results can demonstrate that the natural radioactivity from soil are not affect to population in the area, which the natural radioactivity levels and the radiation risk values of Roi Et soil samples are lower than the UNSCEAR values. Moreover, the data in this research can be used as the basis information of natural background radiation from soil in Roi Et and provides knowledge about the environmental radiation in daily life to people in the area.

Primary author

Mr Purit Quinram (Program of Physics, Faculty of Liberal Arts and Science, Roi Et Rajabhat University, Roi Et 45120, Thailand)

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Paper