Local order and valence state of Fe in urban suspended particulate matter
| Autor: | Francesco d'Acapito, Antonio Gianfagna, Francesco Di Benedetto, Simona Mazziotti Tagliani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Atmospheric Science
Valence (chemistry) Extended X-ray absorption fine structure Chemistry Inorganic chemistry Ambientale [object Object] Particulates PE10_10 Nanocrystalline material XANES Ferrihydrite EXAFS Iron local order Iron valence state Urban PM2.5 Fayalite Leaching (metallurgy) 2300 General Environmental Science |
| Zdroj: | Atmospheric environment (1994) 99 (2014): 582–586. doi:10.1016/j.atmosenv.2014.10.028 info:cnr-pdr/source/autori:d'Acapito F.; Mazziotti Tagliani S.; Di Benedetto F.; Gianfagna A./titolo:Local order and valence state of Fe in urban suspended particulate matter/doi:10.1016%2Fj.atmosenv.2014.10.028/rivista:Atmospheric environment (1994)/anno:2014/pagina_da:582/pagina_a:586/intervallo_pagine:582–586/volume:99 |
| DOI: | 10.1016/j.atmosenv.2014.10.028 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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