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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2015

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Seasonal variation of PAHs concentration and source attribution through diagnostic ratios analysis

Anno di pubblicazione: 2015

Formato: Elettronico

Autori: Finardi S.; Radice P.; Cecinato A.; Gariazzo C.; Gherardi M.; Romagnoli P.

Affiliazioni autori: ARIANET S.r.l., Milano, Italy; CNR-IIA, Montelibretti, RM, Italy; INAIL Research Center, Monteporzio Catone, RM, Italy

Autori CNR:

  • ANGELO CECINATO
  • PAOLA ROMAGNOLI

Lingua: inglese

Abstract: An extensive monitoring campaign was conducted between November 2011 and July 2012 at schools, homes, offices and Regional air quality network stations in Rome, within the LIFE+ EXPAH Project. This study allowed to improve the knowledge of actual concentrations and percent composition of Polycyclic Aromatic Hydrocarbons (PAHs) over the city area. High concentrations of all PAH congeners were observed during winter colder periods, e.g. benzo[a]pyrene weekly average concentration reached 3.0 ng/m3, while much lower values were recorded in summer (<0.1 ng/m3), with seasonal variability (winter-to-summer ratios R) exceeding 10. This latter value was larger than that recorded for other pollutants including PM2.5 (R ~ 2.5). Also the percent composition of PAHs in particulates and the rates of diagnostic concentration ratios between selected congeners changed along the year, allowing to draw insights about the predominant sources and their respective importance. In particular, biomass burning for heating purposes was identified as the prevailing PAH source during winter and vehicle traffic in summer. Discrepancies between PAH profiles estimated from the emission inventory and observations were detected, with possible implication for modelling of PAH congeners.

Lingua abstract: inglese

Rivista:

Urban Climate Elsevier
Paese di pubblicazione:
Lingua: inglese
ISSN: 2212-0955

DOI: 10.1016/j.uclim.2015.12.001

Stato della pubblicazione: Published version

Indicizzato da: Scopus [2-s2.0-84951943160]

Parole chiave:

  • Benzo[a]pyrene BaP
  • Diagnostic (concentration) ratios
  • Polycyclic aromatic hydrocarbons PAH
  • Source apportionment
  • Urban air pollution

URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-84951943160&partnerID=q2rCbXpz

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