Highly mobile iron pool from a dissolution-readsorption process

Details

Serval ID
serval:BIB_1AD4B48575A9
Type
Article: article from journal or magazin.
Collection
Publications
Title
Highly mobile iron pool from a dissolution-readsorption process
Journal
Langmuir
Author(s)
Loring J.S., Simanova A.A., Persson P.
ISSN-L
0743-7463
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
24
Pages
7054-7057
Language
english
Abstract
Oxalate (C(2)O(4)(2-)) acts synergistically on the dissolution of
goethite (alpha-FeOOH) in the presence of siderophores that are secreted
by plants and microorganisms to sequester iron. We report here the first
in situ molecular-scale observations of synergistic ligand-promoted
dissolution processes. We show that there are conditions under which
oxalate promotes goethite dissolution, but dissolved Fe(III)
concentrations do not increase because Fe(III)-oxalate complexes
readsorb to the mineral surface. We demonstrate that these readsorbed
Fe(III)-oxalate complexes are highly mobile, extremely reactive in the
presence of uncomplexed siderophores, and responsible for the
synergistic effects on the dissolution of goethite.
Create date
18/10/2012 20:43
Last modification date
20/08/2019 12:51
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