赣杭构造带某铀矿区地下水中铀的存在形式研究

Abstract

Abstract: To study the influence of hydrochemical properties of groundwater on the existing forms of uranium in uranium mining areas based on the analysis of chemical composition of groundwater, the mathematical statistics software SPSS 18.0 and the numerical simulation software PHREEQC with LLNL database were used to simulate and explore the groundwater hydrochemical characteristics and the existing forms of Uranium in groundwater throughout a uranium mining area along the Gan-Hang Tectonic belt. The results show that the hydrochemical types are mainly HCO₃-Na and HCO₃-Na·Ca, Uranium was positively correlated with Ca²⁺ and Mg²⁺, and moderately correlated with SO₄^2-. Aqueous Uranium in groundwater is mainly hexavalent, accounting for almost 100%. The existing forms of Uranium are mainly UO₂(CO₃)₂^2-, UO₂(CO₃)₃^4-, UO₂CO₃, UO₂(OH)₂, UO₂(OH)₃^- and UO₂OH⁺. Among them, UO₂(CO₃)₂^2- accounts for the absolute majority, followed by UO₂(CO₃)₃^4-, UO₂CO₃ and UO₂(OH)₂, and the total is mainly of a uranyl carbonate form, which corresponds to the acid-base property of groundwater in the studied area.

Key words: uranium ore area, groundwater, Uranium, existing form

CLC Number:

TL75+1

WANG Zhe, ZHU Jianlin, ZHANG Huaisheng, ZHANG Chunyan, LI Dong. Study on the uranium existing form in groundwater of a uranium mining area along the Gan-Hang tectonic belt[J].RADIATION PROTECTION, 2022, 42(1): 19-23.

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