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Redox pp 42-54 | Cite as

Comparison of Different Methods for Redox Potential Determination in Natural Waters

  • M. Kölling
Chapter

Abstract

In geochemical equilibrium model programs such as Phreeqe (Parkhurst et al., 1990) Phreeqc (Parkhurst, 1995) the redox potential is a major variable strictly affecting the species distribution and mineral stability of both, redoxsensitive dissolved species and solid phases. It is therefore necessary to assess the accuracy of pε determinations by redox probes. In addition, there are often inconsistencies to be found in calculated pε values. In different geochemical computer model programs, the pε may be calculated from the concentrations of various redox couples. These values often vary by hundreds of millivolts in one single water analysis. Therefore, the reliability of pε calculations is discussed.

Keywords

Redox Potential Redox Couple Metal Electrode Redox Probe Redox Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Cherry, J.A.; Shaik, A.U.; Tallmann, D.E. & Nicholson, R.V. (1979): Arsenic species as an indicator of redox conditions in groundwater. J. Hydrology 43: 373–392.CrossRefGoogle Scholar
  2. Frevert, T. (1984): Can the redox conditions in natural waters be predicted by a single parameter. Schweiz.Z.Hydrol. 46 /2: 269–290.Google Scholar
  3. Hostettler, J.D. (1984): Electrode electrons, aqueous electrons and redox potentials in natural waters. Am. J. Science 284: 734–759.Google Scholar
  4. Käss, W. (1984): Redoxmessungen im Grundwasser(II). Dt Gewässerkdl. Mitt. 28: 25–27.Google Scholar
  5. Kolling, M. (1986): Vergleich verschiedener Methoden zur Bestimmung des Redoxpotentioals natürlicher Wässer. Meyniana 38: 1–19.Google Scholar
  6. Parkhurst, D.L.; Thorstenson, D.C. & Plummer, L.N. (1990): Phreeqe - A Computer Program for Geochemical Calculations. (Conversion and Upgrade of the Prime Version ofGoogle Scholar
  7. Phreeqe to IBM PC-Compatible Systems by J.V. Tirisanni & P.D. Glynn). U.S. Geol. Survey Water Resources Investigations Reports 80–96, Washington D.C.: 195 p.Google Scholar
  8. Parkhurst, D.L. (1995): Users guide to PHREEQC: A computer model for speciation, reaction-path, advective-transport, and inverse geochemical calculations. U.S.Geol.Survey Water Resources Investigations Reports 95–4227, 143 p.Google Scholar
  9. Sato, M. (1960): Oxidation of sulfide ore bodies -1. Geochemical environments in terms of Eh and pH. Econ. Geol. 55: 928–961.Google Scholar
  10. Shaik, A.U. & Tallman, D.E. (1978): Species-specific analyses for nanogram quantities of arsenic in natural waters by arsine generation followed by graphite furnance atomic absorption spectrometry. Anal. Chim. Acta 98: 251–259.Google Scholar
  11. Stumm, W. (1984): Interpretation and measurement of redox intensity in natural waters. Schweiz. Z. Hydrol. 46 /2: 291–296.Google Scholar
  12. Stumm, W. & Morgan, J.J. (1996): Aquatic Chemistry: Chemical equilibria and rates in natural waters. Wiley & Sons, New York, 1022 p.Google Scholar
  13. Whitfield, M. (1974): Thermodynamic limitations on the use of the platinum electrode in Eh-measurements. Linmol. Oceanogr. 19: 857–865.Google Scholar

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© Springer-Verlag Berlin Heidelberg 2000

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  • M. Kölling

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