http://www.cnr.it/ontology/cnr/individuo/prodotto/ID292696

Local order and valence state of Fe in urban suspended particulate matter (Articolo in rivista)

Type

Label

Local order and valence state of Fe in urban suspended particulate matter (Articolo in rivista) (literal)

Anno

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Alternative label

d'Acapito F.; Mazziotti Tagliani S.; Di Benedetto F.; Gianfagna A. (2014)
Local order and valence state of Fe in urban suspended particulate matter
in Atmospheric environment (1994)
(literal)

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Rivista

Note

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CNR-IOM-OGG c/o ESRF GILDA CRG, 6 Rue Jules Horowitz, Grenoble, F-38043, France; Dipartimento di Scienze della Terra, Sapienza Università di Roma, P.le A. Moro, 5, Roma, 00185, Italy; Dipartimento di Scienze della Terra, Università di Firenze, via G. La Pira, 4, Firenze, 50121, Italy (literal)

Titolo

Local order and valence state of Fe in urban suspended particulate matter (literal)

Abstract

X-ray absorption spectroscopy investigations were carried out on urban suspended particulate matter (PM2.5) with the aim of studying the local order and valence state of iron, a metal abundant in this type of material, particularly in urban environments. XANES results, based on the comparison with model compounds fayalite (Fe2+) and ferrihydrite (Fe3+), show that iron is prevalent as Fe3+, whereas EXAFS data attribute the prevalent Fe3+ to a nanocrystalline phase of ferrihydrite. The dominance of Fe3+ (less soluble than Fe2+) is further confirmed by the fact that previous leaching experiments did not show Fe presence in the solution. (literal)

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