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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Geochim Cosmochim Acta. 2011 Feb 1;75(3):784–799. doi: 10.1016/j.gca.2010.11.011

Fig. 8.

Fig. 8

Concentration of Cu in solution as a function of pH for the control experiment with Cu(II)-citrate. Copper did not precipitate or adsorb onto the reaction vessel over this pH range.