摘要
用Ｃｌｅｇｇ－Ｐｉｔｚｅｒ方程关联了ＨＮＯ３－Ｈ２Ｏ和ＵＯ２（ＮＯ３）２－Ｈ２Ｏ单一电解质水溶液离子 平均活度系数。在此基础上考察了有无混合参数对ＨＮＯ３－ＵＯ２（ＮＯ３）２－Ｈ２Ｏ非对称混合电解质 水溶液体系的关联和预测功能的影响，并与原Ｐｉｔｚｅｒ方程进行了比较。结果表明，Ｃｌｅｇｇ－Ｐｉｔｚｅｒ 方程在电解质浓度适用范围及预测精度方面均优于原Ｐｉｔｚｅｒ方程。
The Clegg-Pitier equation is used to correlate the average ionic activity coefficients in single electrolyte aqueous solutions of HNO3-H2O and UO2 (NO3)2-H2O at 25C. The correlation and prediction capabilities of these equations for mixed electrolyte aqueous solutions of HNO3-UO2 (NO3)2-H2O are tested with and without the adjustable mixed parameters, respectively. They are compared with the original Pitzer equation. The results show that the Clegg-Pitzer equation is superior to the Pitzer equtation. The former has the advantage of good precision in prediction in wider concentration ranges of electrolytes.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1996年第2期102-108,共7页
Journal of Tsinghua University(Science and Technology)
基金
核工业科学基金
关键词
电解质溶液
活度系数
C-P方程
PITZER方程
HNO3
UO2 (NO3)2
electrolyte solution
activity coefficient
Clegg-Pitzer equation3 Pitzer equation
