Abstract
Sorption and reduction are important processes influencing the environmental mobility and cycling of Se. In
this study, we determined the rates of reaction and isotopic fractionations of Se(IV) and Se(VI) during sorption
to iron oxides (2-line ferrihydrite, hematite and goethite) and iron sulfides (mackinawite and pyrite) at
pH 7 and room temperature (22±2
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