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Digitale Medien

Stability constant of Fe2+ chelates with soluble ligands from incubated soils (1987)

Bao, X. M. ; Yu, T. R.

Springer

Biology and fertility of soils 5 (1987), S. 88-92

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Details

ISSN: 1432-0789

Schlagwort(e): Ferrous iron ; Fe2+ chelates ; Stability constants ; Anearobic decomposition

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft

Notizen: Summary The stability constants (log K) of Fe2+ chelates were determined on the basis of the shift in peak potential during the reduction of Fe2+ by a consortium of soluble ligands from incubated soils. Log K values ranged from 2.6 to 4.5. On average a change in pH of 1 unit induced a change in log K of 0.92 units. Aeration of the anaerobic decomposition products increased log K. The log K for Fe2+ chelates was about 0.8 units larger than that for Mn2+ chelates. It is considered that the chelation of ferrous iron plays an important role in the mobility and availability of iron to plants.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00264352

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