Reevaluation of colorimetric iron determination methods commonly used in geomicrobiology.

  title={Reevaluation of colorimetric iron determination methods commonly used in geomicrobiology.},
  author={Juliane Braunschweig and Julian Bosch and Katja Heister and Christine Kuebeck and Rainer U Meckenstock},
  journal={Journal of microbiological methods},
  volume={89 1},
The ferrozine and phenanthroline colorimetric assays are commonly applied for the determination of ferrous and total iron concentrations in geomicrobiological studies. However, accuracy of both methods depends on slight changes in their protocols, on the investigated iron species, and on geochemical variations in sample conditions. Therefore, we tested the performance of both methods using Fe(II)((aq)), Fe(III)((aq)), mixed valence solutions, synthetic goethite, ferrihydrite, and pyrite, as… CONTINUE READING
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