【摘要】 用EQ3/6程序模拟研究了某场址地下水中U的化学形态,并模拟了在不同的pH、温度T、总碳?∑C?浓度、U的浓度ρ(UO22+)等条件下U的化学形态,分析了其化学形态变化规律。结果表明,在该场址地下水中,铀主要以碳酸铀酰络合物形式存在。pH、T、∑C浓度变化对铀的化学形态影响较大。更多还原

【Abstract】 The uranium’s chemical species in the groundwater of a certain place was studied using the EQ3NR geochemical code.The factors such as pH、T、∑C concentration、initial concentration of nuclides,are studied to show the effect on the chemical species.The result shows that the U(VI)-carbonato complexes play an important role in the groundwater,the total content was about 95%.The result of computer simulation accords with the result of thermodynamics analysis.更多还原