Vivianite Precipitation and Phosphate Sorption following Iron Reduction in Anoxic Soils.

Autor: Heiberg, Lisa1 lisa@biology.sdu.dk, Koch, Christian Bender2, Kjaergaard, Charlotte3, Jensen, Henning S.1, Hansen, Hans Christian B.2
Předmět:
Zdroj: Journal of Environmental Quality. May/Jun2012, Vol. 41 Issue 3, p938-949. 12p.
Abstrakt: The article presents a study which aims to measure how the iron (Fe)(III) reduction degree impacts phosphate precipitation and adsorption. Two similarly phosphorus (P)-saturated, a peat soil, a sandy soil and ferric Fe-rich lowland soils were incubated under the conditions of lowland. Mössbauer spectroscopy showed that Fe(III) in the sandy soil was present as phyllosilicates and goethite, while FE(III) in the peat soil was primarily present as polynuclear. Neofromation of a vivianite/metavivianite phase under anoxic conditions was distinguished by X-ray diffraction in the peat.
Databáze: GreenFILE