Appraisal of age-dependent geogenic radiation exposure and carcinogenic risks in the groundwater of Sevathur mine region, Pambar River basin, South India.

Autor: Prapanchan VN; Department of Geology, College of Engineering Guindy (CEG), Anna University, Chennai 600025, India., Subramani T; Department of Geology, College of Engineering Guindy (CEG), Anna University, Chennai 600025, India; Department of Mining Engineering, College of Engineering Guindy (CEG), Anna University, Chennai 600025, India. Electronic address: geosubramani@gmail.com., Sridhar CN; Department of Geology, College of Engineering Guindy (CEG), Anna University, Chennai 600025, India., Karunanidhi D; Department of Civil Engineering, Hindusthan College of Engineering and Technology (Autonomous), Coimbatore 641032, India.
Jazyk: angličtina
Zdroj: Journal of hazardous materials [J Hazard Mater] 2024 Dec 25; Vol. 486, pp. 136972. Date of Electronic Publication: 2024 Dec 25.
DOI: 10.1016/j.jhazmat.2024.136972
Abstrakt: This study investigates groundwater uranium contamination and radiological risks in a part of Pambar River basin, South India, a region with significant geogenic radiation influenced by carbonatite rock formations. Uranium concentrations ranged from 5.8 to 240.8 μg L⁻¹ , with 35 % of samples exceeding the WHO limit of 30 μg L⁻¹ . Annual effective doses varied from 7.22 to 604.36 μSv y⁻¹ , posing higher risks to infants. Despite these findings, cancer mortality and morbidity risks remained below the permissible thresholds, with values of 6.29 × 10 -5 and 9.15 × 10 -5 , respectively. A strong correlation between uranium and total dissolved solids (TDS) highlights the influence of geogenic and anthropogenic factors. Petrological and geochemical analyses revealed uranium-rich pyrochlore minerals in carbonatite rocks, with an average uranium concentration of 14.08 mg kg⁻¹ . This study emphasizes the need for proactive groundwater monitoring and management in uranium-affected regions, providing insights into radiological health risks and geogenic contamination processes.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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Databáze: MEDLINE
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