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Stable chromium (Cr) isotopes can be used as a tracer for changing redox conditions in modern marine systems and in the geological record. We have investigated isotope fractionation during reduction of Cr(VI) aq by Fe(II) aq . Reduction of Cr(VI) aq by Fe(II) aq in batch experiments leads to significant removal of lighter Cr isotopes from solution. Assuming Rayleigh...
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