Abstract
Arsenate, As(V), sorption onto synthetic iron(II) monosulfide, disordered mackinawite (FeS), is
fast. As(V) sorption decreases above the point of zero surface charge of FeS and follows the pH-dependent
concentration of positively charged surface species. No redox reaction is observed between the As(V) ions and
the mineral surface over the time span of the
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