Benzo(a)pyrene air concentrations and emission inventory in Lombardy region, Italy

Developmental Biology

Stefano Caserini²  Vorne Gianelle¹  Cristina Colombi¹  Senem Ozgen²  Guido Lanzani¹  Alessandro Marongiu¹  Silvia Galante² 

[1] ARPA Lombardia (Regional Agency for Environmental Protection) Settore Monitoraggi Ambientali, via Rosellini, 17 Milano, 20124, Italy$$;Politecnico di Milano, D.I.C.A. Sez. Ambientale, Piazza Leonardo da Vinci 32, 20133 Milano, Italy$$

关键词: Polycyclic aromatic hydrocarbons;    air quality;    emission inventory;    wood combustion;    Lombardy;   

DOI  :  10.5094/APR.2013.028

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

Three years of particle phase B(a)P air concentration measurements in 13 sites in Lombardy (Italy) and a detailed emission inventory at the municipal scale for the whole region were used to infer the contribution of different sources to B(a)P atmospheric levels. The analyses of the weekly and monthly profiles of B(a)P concentrations, the cluster analysis and the comparison between the B(a)P/PM₁₀ ratios in ambient air and in the emissions allowed identifying wood burning in small residential appliances as the key source for all the sites, except for those located in Milan. The highest values of the average B(a)P concentrations were not found in the wider urban areas, where in general the highest PM₁₀ levels were registered. Regarding the seasonal variability, a marked reduction of both B(a)P concentrations and B(a)P/PM₁₀ ratios was observed in the summer season. The cluster analysis of PM₁₀ and B(a)P concentrations showed that the two pollutants tend to have a separate pattern; moreover the cluster analysis of B(a)P/PM₁₀ ratios showed that the trend of this ratio split the stations depending on their location: plain area, piedmont and valley zones, and mountain sites. The dominance of the wood combustion highlighted by the emission inventory, originating from the residential sector and from pizzerias in the city of Milan, is consistent with the findings of other studies based on a source apportionment approach or air quality modeling, although some patterns of ambient B(a)P concentrations in one site were not adequately explained by the emission sources included in the emission inventory.

【 授权许可】

Unknown   

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