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Fig. 1. Distribution coefficient for Cs+ exchanging with Na+ on Hanford sediments plotted as a function of aqueous Cs+ concentration for different Na+ concentrations indicated in the figure using the Steefel et al. (2003) selectivity coefficients at 25°C listed in Table 2. Also shown for the 20 M Na+ case is the distribution coefficient calculated at 65°C but using Steefel et al. (2003) selectivity coefficients determined at 25°C (up triangle), and compared with selectivity coefficients measured by Liu et al. (2003b) at 65°C (down triangle).
