Fig. 1From: Oxidation of arsenite to arsenate on birnessite in the presence of lightOxidation of arsenite by Na-birnessite: the amount of arsenate released into the solution during the oxidation of As(III) (470 µM total) in the presence of Na-birnessite as a function of time in light and dark conditions at pH 5 and pH 7 under oxic and anoxic conditionsBack to article page