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Evaluation of natural radioactivity level in Delanta-Dawunt, Wollo District, Ethiopia.
- Source :
- International Journal of Environmental Analytical Chemistry; Dec2023, Vol. 103 Issue 20, p9452-9465, 14p
- Publication Year :
- 2023
-
Abstract
- In the Delanta-Dawunt district of Ethiopia's northern eastern Amhara region, twenty-one different environmental samples (gemstones) were gathered. This is one of the opal-mining (gemstone) locations in Ethiopia. We divided the 21 obtained samples into seven groups. The study's major goals were to quantify the activity concentration of gemstones (opals) and examine the health implications. For <superscript>226</superscript>Ra, the activity concentration ranged from 11.97 ± 2.46 to 62.44 ± 14.99 Bq kg<superscript>−1</superscript>, 25.69 ± 3.69 to 137.84 ± 13.23 Bq kg<superscript>−1</superscript> for <superscript>232</superscript>Th, and 184.84 ± 3.59 to 968.56 ± 18.16 Bq kg<superscript>−1</superscript> for <superscript>40</superscript>K. <superscript>226</superscript>Ra, <superscript>232</superscript>Th, and <superscript>40</superscript>K were found to have mean radioactivity concentrations of 29.84 ± 6.53, 68.44 ± 18.94, and 390.87 ± 6.09 Bq kg<superscript>−1</superscript>, respectively. Radium equivalent activity (Raeq), absorbed dose, annual effective dose equivalent, external and internal radiation hazard (Hex and Hin) index, and activity utilisation index have mean values of 151.68 19.46 Bq kg<superscript>−1</superscript>, 72.19 8.48 nGy h<superscript>−1</superscript>, 0.07 0.01mSv y<superscript>−1</superscript>, 0.43, 0.51, 0.57 0.08, and 0.29 0.03. <superscript>232</superscript>Th has higher specific activity than the global average, while <superscript>40</superscript>K has the same. Meanwhile, the absorbed dose is higher than the world's means value. The average value of excess life cancer risk found in this study is the same as the world's average value. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03067319
- Volume :
- 103
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- International Journal of Environmental Analytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 174320380
- Full Text :
- https://doi.org/10.1080/03067319.2021.2011257