Determination of Natural Radioactivity in Soil Samples around Gold Mining Area in Khamkeut District, Bolikhamxay Province,Laos Using Gamma Ray Spectrometer with NaI (Tl) Detector

Somsavath Leuangtakoun, Bui Thi Hong, Bui Van Loat, Phan Viet Cuong

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Published Sep 5, 2018
DOI: https://doi.org/10.25073/2588-1124/vnumap.4270

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How to Cite
LEUANGTAKOUN, Somsavath et al. Determination of Natural Radioactivity in Soil Samples around Gold Mining Area in Khamkeut District, Bolikhamxay Province,Laos Using Gamma Ray Spectrometer with NaI (Tl) Detector. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 34, n. 3, sep. 2018. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/4270>. Date accessed: 22 nov. 2024. doi: https://doi.org/10.25073/2588-1124/vnumap.4270.
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Issue
Vol 34 No 3
Section
Review Article

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Abstract

This paper presented the method of determining the radioactivity of 40K, 226Ra and 232Th in soil samples by gamma-ray spectrometer using NaI (Tl) scintillation detector. The radioactivity of each isotope is calculated based on the net count rate in the energy window characteristic for the 40K, 226Ra and 232Th radioisotopes respectively. We have determined  activity concentrations of the natural radionuclides 226Ra,232Th and 40K in 15 soil samples collected around gold mines of Khamkeut district, Bolikhamxay Province, Laos. The average activity concentrations of the natural radionuclides 226Ra, 232Th and 40K are 46.58  ±  7.36 , 71.19  ±  5.42 and 574.62  ±  25.02 Bq.kg-1, respectively. The average activity concentrations of 226Ra and 232Th in this work are higher than those of Bolikhamxay Province, Laos and the world average values. The estimated average outdoor annual effective dose (E) and radium equivalent actitvity (Raeq) are 0.10  ±  0.004 mSv.yr-1 and 192.64  ±  16.12 Bq.kg-1, respectively.

Keywords: Gamma-ray-spectroscopy, NaI(Tl) detector, ROI, student’s t distribution, Radiological Hazard Assessment

References

[1] UNSCEAR United National Scientific Committee on the Effectsof Atomic Radiation Sources and Risks of Ionizing Radiation,Report to the General Assembly with Annexes, United Nations,New York, 2000.
[2] N.Q.Huy et al., Natural radioactivity and external does assessment of surcface soils in Vietnam.Radiation Protection Dosimetry (2012), Vol. 151, No. 3, pp. 522–531.
[3] Alamgir Miah et al.,Natural Radioactivity and Associated Dose Rates in soil Samples of Malnichera Tea Garden in Sylhet District of Bangladesh.Nuclear and particle Physics(2012),2(6):147-152
[4] Giorgia Cinelli et., Calibration with MCNP of NaI detector for the determination of natural radioactivity levels in the field. Environment Radioactivity 155-156 (2016) 31-37
[5] Gyuk P.M, Habila S.S, Dogara M.D, Kure N, Daniel H.l, Handan T.E, Determination of Radioactivity level in soil samples at Chikun Environment of Kaduna Metropolis Using gamma ray spectrometry. Science World Journal Vol 12 (No 2) 2017
[6] Somsavath.LEUANGTAKOUN, Bui Van Loat, Vu Thi Kim Duyen, Khong Nam Khang, Natural Radioactivity and External Dose Assessment of Surface Soil in Bolikhamxay Province,Laos. VNU Journal of Science: Mathematics of Physics,Vol.33,No.4(2017) 10-16