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Three-valent manganese in soils*

Published online by Cambridge University Press:  27 March 2009

P. J. G. Mann
Affiliation:
Agricultural Research Council Unit of Soil Metabolism, at Rothamsted Experimental Station, Harpenden

Extract

1. A fraction of soil manganese soluble in buffered pyrophosphate solutions has been identified as three-valent manganese, present in the extract as a soluble complex salt of mangani-pyrophosphoric acid H[MnP3O7].

2. Evidence is given to show that a very significant part of soil manganese may be present as three-valent manganese, and that the product of oxidation of divalent manganese in soils is three-valent manganese. In any soil where the production of divalent manganese by reducing processes is going on at any appreciable rate, the oxidation of divalent manganese will supply three-valent manganese, which may therefore be expected to form a relatively large part of the manganese of certain soils.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1946

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References

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