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Abstract

In this study, the outdoor absorbed dose rate, the annual effective dose equivalent and the excess lifetime cancer risk due to natural radioactivity exposure in soil samples around the coal-fired power plant at Duyen Hai commune, Tra Vinh province were evaluated by using a low background gamma spectrometer with HPGe detector. The results showed that the average radioactivity values of 226Ra, 232Th và 40K in 28 collected soil samples were 38.52 ± 2.55, 36.45 ± 2.70 and 454.20 ± 31.79 Bq kg-1, respectively. The average values of 58.75 nGy h-1, 0.07 mSv y-1 and 0.25 ×10-3 for the outdoor absorbed dose rate, the annual effective dose equivalent and the excess lifetime cancer risk due to the gamma-ray exposure from collected soil samples were within the limits recommended by UNSCEAR (2000). The results did not show the risk of natural radiation exposure from the observed soil samples due to the geology or radioactivity deposition from fly ash for the population in the area around the surveyed coal-fired power plant. It is necessary to periodically survey the radioactivity background and the health hazards to update data, as well as to reflect the variation and the accumulation of radioactivity in the soil according to the operating time of the coal-fired power plant.



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Article Details

Issue: Vol 6 No 1 (2022): Vol 6, Issue 1: Under publishing
Page No.: In press
Published: Jan 10, 2022
Section: Original Research
DOI: https://doi.org/10.32508/stdjns.v6i1.1101

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Copyright: The Authors. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 How to Cite
Vũ, B., Huỳnh, P. T., Nguyễn, T., Huỳnh, P., Võ, H., Lê, T., & Trương, H. L. (2022). Investigation and assessment of radioactivity background around the coal-fired power plant at Duyen Hai commune, Tra Vinh province. Science and Technology Development Journal - Natural Sciences, 6(1), In press. https://doi.org/https://doi.org/10.32508/stdjns.v6i1.1101

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