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Evaluation of soil radioactivity in the areas of underground nuclear explosions at the Pomuk gas field site in Uzbekistan.
- Source :
- Environmental Monitoring & Assessment; Dec2023, Vol. 195 Issue 12, p1-16, 16p
- Publication Year :
- 2023
-
Abstract
- This study investigates soil radioactivity at the Pomuk gas field in Uzbekistan, a region with history of underground nuclear activity. Using a NaI (Tl) scintillation gamma spectrometer, soil samples were analyzed for concentrations of <superscript>232</superscript>Th, <superscript>226</superscript>Ra, <superscript>40</superscript>K, and <superscript>137</superscript>Cs. Concentrations were found to be in the range of 19.0–31.0 Bq/kg for <superscript>232</superscript>Th, 12.0–32.0 Bq/kg for <superscript>226</superscript>Ra, 450.0–634.0 Bq/kg for <superscript>40</superscript>K, and 2.4–11.0 Bq/kg for <superscript>137</superscript>Cs. Surface radon flux density was measured using a coal sorbent-based passive method, with values ranging from 26.1 to 79.0 mBq/m<superscript>2</superscript>s. Mean activity values for radium equivalent (Ra<subscript>eq</subscript>) and gamma representative level index (I<subscript>γ</subscript>) were calculated to be 75.2–96.5 Bq/kg and 0.3–0.4 Bq/kg, respectively. The absorbed airborne gamma dose rates (GDR) varied between 41.0 and 52.0 nGy/h, while annual effective dose rates (AEDR) were 0.3–0.4 μSv/year. The radiological risk assessment indicates the area is within safe limits for the population and environment, providing a foundation for future radiological monitoring programs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01676369
- Volume :
- 195
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Environmental Monitoring & Assessment
- Publication Type :
- Academic Journal
- Accession number :
- 174266915
- Full Text :
- https://doi.org/10.1007/s10661-023-12018-7