Redox transformation of arsenic by Fe(II)-activated goethite (alpha-FeOOH).

@article{Amstaetter2010RedoxTO,
  title={Redox transformation of arsenic by Fe(II)-activated goethite (alpha-FeOOH).},
  author={Katja Amstaetter and Thomas Borch and Philip Larese-Casanova and Andreas Kappler},
  journal={Environmental science & technology},
  year={2010},
  volume={44 1},
  pages={
          102-8
        }
}
The redox state and speciation of the metalloid arsenic (As) determine its environmental fate and toxicity. Knowledge about biogeochemical processes influencing arsenic redox state is therefore necessary to understand and predict its environmental behavior. Here we quantified arsenic redox changes by pH-neutral goethite [alpha-Fe(III)OOH] mineral suspensions amended with Fe(II) using wet-chemical and synchrotron X-ray absorption (XANES) analysis. Goethite itself did not oxidize As(III) and, in… CONTINUE READING
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