Natural Radioactivity and External Dose Assessment of Surface Soils in Bolikhamxay Province, Laos

Loat Bui Van, Somsavath Leuangtakoun, Vu Thi Kim Duyen, Khong Nam Khang

Article Sidebar

PDF
Published Dec 25, 2017
DOI: https://doi.org/10.25073/2588-1124/vnumap.4224

Article Details

How to Cite
BUI VAN, Loat et al. Natural Radioactivity and External Dose Assessment of Surface Soils in Bolikhamxay Province, Laos. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 33, n. 4, dec. 2017. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/4224>. Date accessed: 26 apr. 2024. doi: https://doi.org/10.25073/2588-1124/vnumap.4224.
ABNT APA BibTeX CBE EndNote - EndNote format (Macintosh & Windows) MLA ProCite - RIS format (Macintosh & Windows) RefWorks Reference Manager - RIS format (Windows only) Turabian
Issue
Vol 33 No 4
Section
Review Article

Main Article Content

Abstract

We have determined activity concentrations in 33 soil samples collected from Bolikhamxay Province, Laos. The activity concentrations of the natural radionuclides 226Ra,232Th and 40K in soil samples were measured by a gamma spectrometer with a HPGe detector. The average activity concentrations of the natural radionuclides 226Ra, 232Th and 40K are 43.8  ±  5.6, 57.0  ±  7.3 and 426.4  ±  23.1 Bq.kg-1, respectively. The average activity concentrations of 226Ra and 232Th in this work are higher than those of the world average values. Meanwhile, the  activity concentration of 40 K is almost the same of the world average value. The estimated average outdoor annual effective dose (E) and radium equivalent actitvity (Raeq) are 0.17  ±  0.02 mSv.yr-1 and 154.8  ±  16.1 Bq.kg-1, respectively.

Keywords: Gamma spectrometry, Activity concentration, Radium Equivalent Activity, Absorbed gamma dose rate, Annual effective dose rate, Minimum Detection Limit

References

[1] UNSCEAR United National Scientific Committee on the Effects of Atomic Radiation Sources and Risks of Ionizing Radiation, Report to the General Assembly with Annexes, United Nations, New York, 2000.
[2] KarahanG, Bayulken A. Assessment of gamma dose rates around Istanbul (Turkey). J Environ Radioact 2000; 47:213-21.
[3] Erees FS, Aközcan S, Parlak Y, Çam S. Assessment of dose rates around Manisa (Turkey). Radiat Measure 2006;41:598‑601.
[4] Dabayneh K, Mashal L, Hasan F. Radioactivity concentration in soil samples in the southern part of the WestBank, Palestine. RadiatProt Dos 2008; 131: 265-271.
[5] Abdel-Ghany H. Natural activities of 238U,232Th and 40K in manganese ore. Am EnvSci 2010; 6: 90-94.
[6] Yu, K.N., Guan, Z.J., Stokes, M.J. and Young, E.C.M.,The assessment of natural radiation dose committed to the Hong Kong people.Journal of Environmental Radioactivity 17,31.(1992).
[7] Beretka, J. and J. Matthew, 1985. Natural radioactivityof Australian building materials, industrial wastesand by products. Health Physics Journal, 48: 87-95.
[8] 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.