Combined use of X-ray photoelectron and Mössbauer spectroscopic techniques in the analytical characterization of iron oxidation state in amphibole asbestos

Fantauzzi, Marzia; Pacella, Alessandro; Atzei, Davide; Gianfagna, Antonio; Andreozzi, Giovanni B.; Rossi, Antonella
April 2010
Analytical & Bioanalytical Chemistry;Apr2010, Vol. 396 Issue 8, p2889
Academic Journal
Asbestos fibers are an important cause of serious health problems and respiratory diseases. The presence, structural coordination, and oxidation state of iron at the fiber surface are potentially important for the biological effects of asbestos because iron can catalyze the Haber–Weiss reaction, generating the reactive oxygen species ⋅OH. Literature results indicate that the surface concentration of Fe(III) may play an important role in fiber-related radical formation. Amphibole asbestos were analyzed by X-ray photoelectron spectroscopy (XPS) and Mössbauer spectroscopy, with the aim of determining the surface vs. bulk Fe(III)/Fetot ratios. A standard reference asbestos (Union Internationale Contre le Cancer crocidolite from South Africa) and three fibrous tremolite samples (from Italy and USA) were investigated. In addition to the Mössbauer spectroscopy study of bulk Fe(III)/Fetot ratios, much work was dedicated to the interpretation of the XPS Fe2p signal and to the quantification of surface Fe(III)/Fetot ratios. Results confirmed the importance of surface properties because this showed that fiber surfaces are always more oxidized than the bulk and that Fe(III) is present as oxide and oxyhydroxide species. Notably, the highest difference of surface/bulk Fe oxidation was found for San Mango tremolite—the sample that in preliminary cytotoxicity tests (MTT assay) had revealed a cell mortality delayed with respect to the other samples.


Related Articles

  • Surface chemistry and surface reactivity of fibrous amphiboles that are not regulated as asbestos. Fantauzzi, M.; Pacella, A.; Fournier, J.; Gianfagna, A.; Andreozzi, G.; Rossi, A. // Analytical & Bioanalytical Chemistry;Dec2012, Vol. 404 Issue 3, p821 

    Three fibrous amphiboles that are not regulated as asbestos-two from Biancavilla (Sicily, Italy) and one from Libby (MT, USA)-were studied in order to establish relationships between surface chemistry and surface reactivity. The three fibrous samples, plus one prismatic fluoro-edenite from...

  • Size-dependent effects in supported highly dispersed FeO catalysts, doped with Pt and Pd. Cherkezova-Zheleva, Zara; Shopska, Maya; Mitov, Ivan; Kadinov, Georgi // Hyperfine Interactions;2010, Vol. 198 Issue 1-3, p195 

    Series of Fe and Fe-Me (Me = Pt or Pd) catalyst supported on γ-AlO, TiO (anatase) or diatomite were prepared by the incipient wetness impregnation method. The metal loading was 8 wt.% Fe and 0.7 wt.% noble metal. The preparation and pretreatment conditions of all studied samples were kept to...

  • Dopant spin states and magnetism of Sn1-xFexO2 nanoparticles. Punnoose, A.; Dodge, Kelsey; Beltrán, J. J.; Reddy, K. M.; Franco, Nevil; Chess, Jordan; Eixenberger, Josh; Barrero, C. A. // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17B534-1 

    The article focuses on a study which investigates that details of Sn1-xFexO2 nanopowder. It mentions that Mossbauer spectroscopy, x-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance spectroscopy (EPR) was used for finding out the magnetism of nanopowder.

  • X-ray photoelectron and mössbauer spectroscopy studies of the valence state of transition metal ions in CoFeCrO ( x = 0.1, 0.2, 0.5) ceramics. Kochur, A.; Guglev, K.; Kozakov, A.; Kubrin, S.; Nikol'skii, A.; Torgashev, V. // Physics of the Solid State;Jan2016, Vol. 58 Issue 1, p108 

    The valence state of transition metal ions in the CoFeCrO ( x = 0.1, 0.2, 0.5) system has been investigated using X-ray photoelectron and Mössbauer spectroscopy. It has been shown that, in this system, there are Fe and Fe ions. The relative Fe/Fe contents have been determined by fitting the...

  • Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)3-δO4 nanoparticles. Antic, B.; Kremenovic, A.; Jovic, N.; Pavlovic, M. B.; Jovalekic, C.; Nikolic, A. S.; Goya, G. F.; Weidenthaler, C. // Journal of Applied Physics;Apr2012, Vol. 111 Issue 7, p074309 

    We present a study of the structural and magnetic properties of (Mn,Fe)3-δO4 nanoparticles synthesized by soft mechanochemistry using Mn(OH)2 × 2 H2O and Fe(OH)3 powders as starting compounds. The resulting nanoparticles with a composition of the (Mn,Fe)3-δO4 type are found to have a...

  • Epidemiology of Malignant Mesothelioma—An Outline. Mcdonald, J. Corbett // Annals of Occupational Hygiene;Nov2010, Vol. 54 Issue 8, p851 

    In the 1960s and 1970s, well designed case-referent studies put beyond doubt that exposure to airborne asbestos fibres was a cause of malignant mesothelioma. Some 35 cohort mortality studies in a large variety of industries during the 20-year period, 1974–1994, showed a wide range of...

  • Amphiboles from the Kola Superdeep Borehole: Fe3+ contents from crystal-chemical analysis and Mössbauer spectroscopy. Y. Uvarova; E. Sokolova; F. C. Hawthorne; C. A. McCammon; V. I. Kazansky; K. V. Lobanov // Mineralogical Magazine;Dec2007, Vol. 71 Issue 6, p651 

    The crystal structures of a suite of amphiboles from the Kola Superdeep Borehole, Russia, have been refined to R values of ∼3% using single-crystal Mo-Kα X-ray diffraction data. The same crystals used in the collection of the intensity data were subsequently analysed by electron...

  • Asbestos fibre identification vs. evaluation of asbestos hazard in ophiolitic rock mélanges, a case study from the Ligurian Alps (Italy). Vignaroli, Gianluca; Ballirano, Paolo; Belardi, Girolamo; Rossetti, Federico // Environmental Earth Sciences;Nov2014, Vol. 72 Issue 9, p3679 

    In recent years, the high incidence of harmful health effects through inhalation of airborne asbestos from amphibole-bearing rock mélanges has been thoroughly documented. Here, we present a field-based, multi-scale geological approach aimed at illustrating the occurrence of amphibole fibrous...

  • Malignant Mesothelioma in Australia (1945–1995). Leigh, J.; Hull, B.; Davidson, P. // Annals of Occupational Hygiene;1997 Inhaled Particles VIII, Vol. 41, p161 

    The article presents a study which examines the malignant cases of mesothelioma in the crocidolite mine at Wittenoom, Western Australia from 1945 to 1995. It explores the occupational and environmental exposure of asbestos and related products to mesothelioma epidemic in the country. It...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics