Activity coefficients and Pitzer parameters for the fission product ions Cs+ and TcO4- in the system Cs+/Na+/K+/Mg2+/Cl-/SO42-/TcO4-/H2O at 25 degrees C

Authors
Neck, V Konnecke, T Fanghanel, T Kim, KI
Citation
V. Neck et al., Activity coefficients and Pitzer parameters for the fission product ions Cs+ and TcO4- in the system Cs+/Na+/K+/Mg2+/Cl-/SO42-/TcO4-/H2O at 25 degrees C, RADIOCH ACT, 83(2), 1998, pp. 75-80
Citations number
17
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RADIOCHIMICA ACTA
ISSN journal
00338230 → ACNP
Volume
83
Issue
2
Year of publication
1998
Pages
75 - 80
Database
ISI
SICI code
0033-8230(1998)83:2<75:ACAPPF>2.0.ZU;2-X
Abstract
A set of binary and ternary ion interaction Fitter parameters is presented for the calculation of trace activity coefficients for the fission product ions Cs+ and TcO4- in concentrated salt brines of the quinary system Na-K-M g-Cl-SO4-H2O at 25 degrees C. Available literature data are selected and un known mixing parameters for the Cs+ ion are evaluated from solubility data in ternary and quaternary systems. The applicability of the evaluated param eters is tested by comparing measured and predicted solubilities of sparing ly soluble CsTcO4 in concentrated sodium and magnesium solutions of either chloride or sulfate.