Iron speciation in peats: Chemical and spectroscopic evidence for the co-occurrence of ferric and ferrous iron in organic complexes and mineral precipitates

•Fe speciation in redox-stratified peats is reported.•Fe2+ and Fe3+ co-occur irrespective of redox conditions.•Complexation of Fe with organic matter is the primary stabilization mechanism.•Fe (oxy)hydroxide is identified as a secondary Fe species. The speciation of iron (Fe) in organic matter (OM)-...

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Bibliographic Details
Published in:	Organic geochemistry Vol. 115; pp. 124 - 137
Main Authors:	Bhattacharyya, Amrita, Schmidt, Michael P., Stavitski, Eli, Martínez, Carmen Enid
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-01-2018
Subjects:	Ferric Ferrous Iron Iron speciation Iron-organic matter interactions Multiplet calculations Peatlands Redox Spectroscopy Ferric Spectroscopy Iron-organic matter interactions Iron speciation Ferrous Peatlands Redox Multiplet calculations Iron
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