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Atmosphere 2016, 7(12), 163;

Chemical Composition of PM10 at Urban Sites in Naples (Italy)

Dipartimento di Farmacia, Università degli Studi di Napoli Federico II, Napoli 80131, Italy
Agenzia Regionale per la Protezione Ambientale in Campania, Napoli 80143, Italy
Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Napoli 80126, Italy
Reparto Igiene dell’Aria, Dipartimento Ambiente e Connessa Prevenzione Primaria, Istituto Superiore di Sanità 00161, Italy
Author to whom correspondence should be addressed.
Academic Editor: Yuxuan Wang
Received: 28 October 2016 / Revised: 6 December 2016 / Accepted: 9 December 2016 / Published: 16 December 2016
(This article belongs to the Special Issue Urban Air Pollution)
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Here, we report the chemical characterization and identification of the possible sources of particulate matter (fraction PM10) at two different sites in Naples. PM10 concentration and its chemical composition were studied using the crustal enrichment factor (EF) and principal component analysis (PCA). In all of the seasons, the PM10 levels, were significantly higher (p < 0.01) in the urban-traffic site (denominated NA02) than in the urban-background site (denominated NA01). In order to reconstruct the particle mass, the components were classified into seven classes as follows: mineral dust (MD), trace elements (TE), organic matter (OM), elemental carbon (EC), sea salt (SS), secondary inorganic aerosol (SIA) and undetermined parts (unknown (UNK)). According to the chemical mass closure obtained, the major contribution was OM, which was higher (p < 0.01) during summer than in other seasons. In both sites, a good correlation (R2 > 0.8) was obtained between reconstructed mass and gravimetric mass. PCA analysis explained 76% and 79% of the variance in NA01 and NA02, respectively. The emission sources were the same for both sites; but, the location of the site, the different distances from the sources and the presence and absence of vegetation proved the different concentrations and compositions of PM10. View Full-Text
Keywords: PM10; chemical composition; enrichment factor; mass closure; principal component analysis PM10; chemical composition; enrichment factor; mass closure; principal component analysis

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Di Vaio, P.; Magli, E.; Barbato, F.; Caliendo, G.; Cocozziello, B.; Corvino, A.; De Marco, A.; Fiorino, F.; Frecentese, F.; Onorati, G.; Saccone, I.; Santagada, V.; Soggiu, M.E.; Severino, B.; Perissutti, E. Chemical Composition of PM10 at Urban Sites in Naples (Italy). Atmosphere 2016, 7, 163.

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