Clays and Clay Minerals -- Khare et al. 53 (6): 564 Figure 4

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Figure 4. (a) Ionic strength dependence of Hcc sorption on hematite at pH 3.0, 6.7 and 9.5; (b) UV-visible spectra for Hcc in solution at pH 3.0 and 9.5 at 100, 300 and 500 mM background electrolyte (KCl) concentration showing changes in molar absorptivity with ionic strength at pH 9.5.