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(Article of periodic en Anglais - 2012)

Document title

Selective dissolution of Fe–Ti oxides — Extractable iron as a criterion for andic properties revisited

Authors(s) and Affiliation(s)

ALGOE C. (1) ; STOOPS G. (1) ; VANDENBERGHE R.E. (2) ; VAN RANST E. (1) ;
(1) Dep. of Geology and Soil Science, Univ., Ghent, BELGIQUE
(2) Dep. of Physics and Astronomy, Univ., Gent, BELGIQUE

Abstract

This paper discusses the influence of Fe-Ti oxides in particular titanomagnetite, a common constituent of many volcanic rocks, on Feox values and proposes an alternative method for determination of SRO Fe-constituents. Mineralogical analyses of fresh dolerite, separated magnetic fractions and single titanomagnetite grains were carried out using scanning electron microscopy, electron microprobe, and Mössbauer spectroscopy. Iron was selectively extracted using acid-ammonium oxalate (Feox), Na dithionite-citrate-bicarbonate (Fed) and Tiron (Fetiron). The Tiron extraction method is being recommended as a better alternative to the oxalate method to quantify amorphous/SRO Fe-constituents in soils and regoliths containing magnetic minerals, and especially to identify andic properties in soils on volcanic ash

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 92 [pp. 49-54]

Bibliographic references : 30 ref.

Collation : 5 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.11.016

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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