物理化学学报 >> 2010, Vol. 26 >> Issue (04): 811-816.doi: 10.3866/PKU.WHXB20100114

热力学、热化学和溶液化学 上一篇    下一篇

镅在榆次地下水中的溶解度分析

陈涛, 王祥云, 田文宇, 孙茂, 黎春, 刘晓宇, 王路化, 刘春立   

  1. 北京大学化学与分子工程学院应用化学研究所, 放射化学与辐射化学重点学科实验室, 北京分子科学国家实验室, 北京 100871
  • 收稿日期:2009-08-05 修回日期:2009-09-16 发布日期:2010-04-02
  • 通讯作者: 刘春立 E-mail:liucl@pku.edu.cn

Solubility Analysis of Americiumin Yuci Groundwater

CHEN Tao, WANG Xiang-Yun, TIAN Wen-Yu, SUN Mao, LI Chun, LIU Xiao-Yu, WANG Lu-Hua, LIU Chun-Li   

  1. Beijing National Laboratory for Molecular Sciences, Radiochemistry & Radiation Chemistry Key Laboratory for Fundamental Sciences, Institute of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2009-08-05 Revised:2009-09-16 Published:2010-04-02
  • Contact: LIU Chun-Li E-mail:liucl@pku.edu.cn

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摘要：

利用自行开发的化学形态分析软件CHEMSPEC计算了镅在榆次地下水中的溶解度, 同时研究了pH值、地下水成分、温度等因素对镅在榆次地下水中溶解度的影响. 结果表明, pH值、总碳酸根离子浓度和温度对溶解度有显著影响; 而硫酸根离子浓度、氯离子浓度对溶解度的影响可以忽略. 计算表明, 镅在榆次地下水中的溶解度在1.4×10-10-6.3×10-3 mol·L-1之间. 在25 ℃, pH=6.0时, 总碳酸根离子浓度为1×10-5 mol·L-1时, 镅的溶解度最大, 该值可用于镅在榆次浅层含水层中的扩散和迁移行为的偏保守预测.

关键词: 镅, 溶解度, CHEMSPEC软件, 榆次地下水, 扩散和迁移

Abstract:

The solubility of americiumin Yuci groundwater was analyzed using a newly developed geochemical code CHEMSPEC and the influence of pH, groundwater composition, and temperature on its solubility was also investigated. The results indicate that the pH, the total carbonate concentration, and the temperature have obvious influences on solubility while the sulfate and chloride concentrations do not. The solubility of americiumin Yuci groundwater is 1.4×10-10-6.3×10 -3 mol·L-1. The maximum solubility was obtained at 25 ℃, pH=6.0, and a total carbonate concentration of 1×10-5 mol·L-1. These data can be used to predict the diffusion and migration behavior of americiumin the aquifer.

Key words: Americium, Solubility, CHEMSPEC software, Yuci groundwater, Diffusion and migration