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The SIT Model Parameters for Interactions of Uranyl Ion with Chloride and Nitrate Ionsстатья
- Автор: Plyasunov Andrey V.
- Журнал: Journal of Solution Chemistry
- Том: 52
- Номер: 1
- Год издания: 2023
- Издательство: Kluwer Academic/Plenum Publishers
- Местоположение издательства: United States
- Первая страница: 3
- Последняя страница: 18
- DOI: 10.1007/s10953-022-01213-8
- Аннотация: The SIT model for activity coefficients of aqueous ions is popular among radiochemists. So far, this model has no parameters for interactions between uranyl ion and the chloride and nitrate anions, as their evaluation from activity coefficients of uranyl chloride and nitrate could not be recommended due to partial association of these electrolytes. This study discusses the relations of the thermodynamics of associated electrolytes that allows correction of the activity coefficients for effects of complex formation and thus determine the “true” values of the SIT interaction coefficients. At 298 K the following values are obtained: ϵ(UO2+2,CI−) = (0.32 ± 0.03); ϵ(UO2Cl+,Cl−) = (0.32 ± 0.02); ϵ(UO2+2,NO−3) = (0.28 ± 0.02); ϵ(UO2NO+3,NO−3) = (0.34 ± 0.02).
- Добавил в систему: Плясунов Андрей Валентинович