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This article in SSSAJ

  1. Vol. 32 No. 1, p. 35-40
    Received: Feb 13, 1967
    Accepted: Sept 29, 1967

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Solubility and Redox Criteria for the Possible Forms of Selenium in Soils1

  1. Harold R. Geering,
  2. Earle E. Cary,
  3. L. H. P. Jones and
  4. W. H. Allaway2



The solubility of Se in seven soils indicate that Se concentration in solution is governed primarily by a ferric oxide-selenite-adsorption complex (Se oxidation state +4). However, under certain conditions Se may also exist in the oxidation states +6, 0, and −2. The proportions of Se in the four oxidation states are treated theoretically as they are affected by the redox potential, soil pH, and ions with which Se combines.

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