Fig. 2
From: The synergistic effect of calcium on organic carbon sequestration to ferrihydrite
The effect of pH on DOM sorption to 2-line ferrihydrite: sorption envelopes of DOM sorption to ferrihydrite at pH 4 to 9 in the presence of no added Ca (a), 10 mM Ca (b), or 30 mM Ca (c). An initial C/Fe ratio of 4.7 was used for all samples and experiments were performed in triplicate