title: A multi-approach monitoring of particulate matter, metals and PAHs in an urban street canyon.
abstract: For the first time until now, the results from a prediction model (Atmospheric Dispersion Modelling System (ADMS)-Road) of pollutant dispersion in a street canyon were compared to the results obtained from biomonitors. In particular, the instrumental monitoring of particulate matter (PM10) and the biomonitoring of 14 polycyclic aromatic hydrocarbons (PAHs) and 11 metals by Quercus ilex leaves and Hypnum cupressiforme moss bags, acting as long- and short-term accumulators, respectively, were carried out. For both PAHs and metals, similar bioaccumulation trends were observed, with higher concentrations in biomonitors exposed at the leeward canyon side, affected by primary air vortex. The major pollutant accumulation at the leeward side was also predicted by the ADMS-Road model, on the basis of the prevailing wind direction that determines different exposure of the street canyon sides to pollutants emitted by vehicular traffic. A clear vertical (3, 6 and 9 m) distribution gradient of pollutants was not observed, so that both the model and biomonitoring results suggested that local air turbulences in the street canyon could contribute to uniform pollutant distribution at different heights.
authors: Dipt. Scienze per la Biologia, la Geologia e l'Ambiente, Università degli Studi del Sannio, via Port'Arsa 11, Benevento, Italy.
authors: Flavia
authors: F
authors: De Nicola
authors: Fabio
authors: F
authors: Murena
authors: M Antonietta
authors: MA
authors: Costagliola
authors: Anna
authors: A
authors: Alfani
authors: Daniela
authors: D
authors: Baldantoni
authors: M Vittoria
authors: MV
authors: Prati
authors: Ludovica
authors: L
authors: Sessa
authors: Valeria
authors: V
authors: Spagnuolo
authors: Simonetta
authors: S
authors: Giordano
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D019068:Bryopsida / Q000187:drug effects / Q000378:metabolism; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods*; D029964:Fagus / Q000187:drug effects / Q000378:metabolism; D007558:Italy; D008670:Metals / Q000032:analysis*; D008962:Models, Theoretical; D052638:Particulate Matter / Q000032:analysis*; D018515:Plant Leaves / Q000378:metabolism; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D029963:Quercus / Q000187:drug effects / Q000378:metabolism; D015203:Reproducibility of Results; D001335:Vehicle Emissions / Q000032:analysis; D014919:Wind
chemical_list: D000393:Air Pollutants; D008670:Metals; D052638:Particulate Matter; D011084:Polycyclic Aromatic Hydrocarbons; D001335:Vehicle Emissions