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8802451 
Journal Article 
The distribution and enrichment of Uranium in groundwater of Hailar Basin 
Zhang, HY; Gao, B; Ge, Q; Hua, EX; Huang, SH; Yi, L; Shen, W; Lin, CY 
2021 
1 
Zhongguo Huanjing Kexue / China Environmental Science
ISSN: 1000-6923 
41 
1 
223-231 
Chinese 
12 surface water samples and 67 groundwater samples were collected from the Hailar Basin. The distribution characteristics and occurrence patterns of uranium in groundwater of samples were analyzed using Durov diagrams, contour maps, uranium form calculation theory, as well as mathematical statistics. Results show that the Helhongde sag area of the Hailar Basin is mainly HCO3-Ca•Na type, the Wagang uplift, Wuerxun sag and Beier sag area are mainly Cl-Na type and HCO3-Na type, and the Bayanshan uplift area was mainly HCO3-Ca•Na type. Hongqi Ranch and Xinbaolige depression were mainly Cl-Na type. The distribution of uranium in the study area ranged from 17 to 425μg/L, with an average of 80μg/L and a standard deviation of 70μg/L, which may indicate a regional groundwater uranium pollution. UO2(CO3)34- and UO2(CO3)22- are the dominate forms of uranium in groundwater, which is consistent with the redox environment of Eh, indicating a favorable environment for uranium mineralization in groundwater in the southeast of Hulunbuir Lake. Uranium mineralization prefers HCO3-type uranium-containing groundwater where uranyl bicarbonate is dominant, and the uranyl carbonate complex should be the dominate form. The dissolution of uranium is related to the increase of HCO3-. Uranium in groundwater may have participated in the mixed leaching of carbonate rock and sulfate rock. UO2(CO3)34-, UO2(CO3)22-, U4O9and bituminous ore are in a saturated state, while the concentrations of total Fe and (Ca2++Mg2+) were low. Various water chemical indicators are indicative of uranium enrichment, so they can be regarded as references for potential uranium sources. © 2021, Editorial Board of China Environmental Science. All right reserved. 
Groundwater; Hydrogeochemistry; Uranium 
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• Uranium Toxicological Review
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