1. Distribution of Uranium and Molybdenum in River Sediment near Molybdenite Mining Region: A Case Study in SW China.
- Author
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Zhang, Hang, Wang, Xinyu, Wang, Hangjia, Yin, Jinfan, Wang, Ruilin, Shi, Zeming, and Ni, Shijun
- Subjects
RIVER sediments ,ACID mine drainage ,RIVER pollution ,ORE deposits ,MOLYBDENUM ,MOLYBDENITE ,MINE water ,ANALYSIS of river sediments - Abstract
This work aims to understand the distribution and migration mechanisms of U and Mo between surface sediment and water in acid mine drainage (AMD) regions near a molybdenum mining region. A series of river sediment and water samples near the Jinduicheng mining area, one of the largest deposits of molybdenite ore in Asia, were collected and analyzed. Our results indicate that: (1) The pH value of river water samples increases with distance from upstream to downstream, while the pH has poor correlation with Mo and U; (2) The content of Mo and U in the sediment are significantly higher than the background value, which suggests potential pollution; (3) The content of Mo and U in the water and sediments in the lower reaches of the Wenyu river is significantly linearly related with the distance from the mining area, suggesting that AMD is a potential source; (4) BCR analysis shows that Mo in river sediments mainly existed as the residual, while U mainly existed as the non-residual; (5) The distribution coefficient K
d (Mo) exceeds Kd (U), indicating that Mo is enriched in sediments while U is more prone to porewater. [ABSTRACT FROM AUTHOR]- Published
- 2023
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