http://www.cnr.it/ontology/cnr/individuo/prodotto/ID285205

Variability of the health effects of crystalline silica:Fe speciation in industrial quartz reagents and suspended dusts-insights from XAS spectroscopy. (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Variability of the health effects of crystalline silica:Fe speciation in industrial quartz reagents and suspended dusts-insights from XAS spectroscopy. (Articolo in rivista) (literal)

Anno

2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1007/s00269-013-0640-2 (literal)

Alternative label

Di Benedetto F.[1], D'Acapito F.[2], Capacci F.[3], Fornaciai G. [4], Innocenti M.[4,5], Montegrossi G.[6], Oberhauser W.[5], Pardi L.A. [7], Romanelli M. [1] (2014)
Variability of the health effects of crystalline silica:Fe speciation in industrial quartz reagents and suspended dusts-insights from XAS spectroscopy.
in Physics and chemistry of minerals; Springer, Berlin (Germania)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Di Benedetto F.[1], D'Acapito F.[2], Capacci F.[3], Fornaciai G. [4], Innocenti M.[4,5], Montegrossi G.[6], Oberhauser W.[5], Pardi L.A. [7], Romanelli M. [1] (literal)

Pagina inizio

215 (literal)

Pagina fine

225 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://link.springer.com/journal/269 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

41 (literal)

Rivista

Physics and chemistry of minerals (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

3 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

[1] Dipartimento di Scienze della Terra, Università di Firenze, Florence, Italy. [2] CNR IOM OGG, c/o European Synchrotron Radiation Facility, Grenoble, France. [3] Health Agency of Florence, Florence, Italy. [4] Dipartimento di Chimica, Università di Firenze, Sesto Fiorentino, Italy. [5] Istituto di Chimica dei Composti Organo Metallici (CNR-ICCOM), Sesto Fiorentino, Italy. [6] Istituto di Geoscienze e Georisorse (CNR-IGG), Florence, Italy. [7] Istituto per i Processi Chimico-Fisici (CNR-IPCF), Pisa, Italy . (literal)

Titolo

Variability of the health effects of crystalline silica:Fe speciation in industrial quartz reagents and suspended dusts-insights from XAS spectroscopy. (literal)

Abstract

We investigated the speciation of Fe in bulk and in suspended respirable quartz dusts coming from ceramic and iron-casting industrial processes via X-ray absorption spectroscopy, with the aim of contributing to a better understanding of the variability of crystalline silica toxicity. Four different bulk industrial quartz powders, nominally pure quartz samples with Fe contents below 200 ppm, and three respirable dusts filters were selected. Fe speciation was determined in all samples through a coupled study of the X-ray absorption near-edge structure and extended X-ray absorption fine structure regions, operating at the Fe-K edge. Fe speciation revealed common features at the beginning of the different production processes, whereas significant differences were observed on both respirable dusts and bulk dusts exiting from the production process. Namely, a common pollution of the raw quartz dusts by elemental Fe was evidenced and attributed to residuals of the industrial production of quartz materials. Moreover, the respirable samples indicated that reactivity occurs after the suspension of the powders in air. The gravitational selection during the particle suspension consistently allowed us to clearly discriminate between suspended and bulk dusts. On the basis of the obtained results, we provide an apparent spectroscopic discrimination between the raw materials used in the considered industrial processes, and those that are effectively inhaled by workers. In particular, an amorphous Fe-III oxide, with an unsaturated coordination sphere, can be related to silica reactivity (and health consequences). (literal)

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