Biogeochemistry of iron in an acidic lake

  title={Biogeochemistry of iron in an acidic lake},
  author={Barbara Sulzberger and Jerald L. Schnoor and Rudolf Giovanoli and Janet G Hering and Juerg Zobrist},
  journal={Aquatic Sciences},
In this paper, the fate of iron in Lake Cristallina, an acidic lake in the Alps of Switzerland, is discussed. A simple conceptual model is developed in order to explain the observed diel variation in dissolved iron(II) concentration. Biotite weathering provides reduced iron that is oxidized and subsequently precipitated in the lake. The amorphous Fe(III)hydroxide (FeOOH ⋅xH2O), found in the sediments of Lake Cristallina, is an Fe(II) oxidation product. This oxygenation reaction is most probably… CONTINUE READING


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