Fig. 2. Effect of varying total (initial) CO₃ concentrations on the SeO₄ adsorption. Total (initial) SeO₄ concentration was 1 mM, pH 6.6, 100% adsorption is 1.51 µmol m^-2, and initial [NaCl] = 11 mM. The symbols indicate values that were determined by nonlinear regression from several data points in the pH range of 6 to 7 (Wijnja, 1999).

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