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Source apportionment of the carcinogenic potential of polycyclic aromatic hydrocarbons (PAH) associated to airborne PM10 by a PMF model

AuthorsCallén Romero, Mª Soledad ; Iturmendi, Amaia ; López Sebastián, José Manuel ; Mastral Lamarca, Ana María
Receptor modelling
Lifetime lung cáncer risk
Issue Date11-Sep-2013
PublisherSpringer Nature
CitationEnvironmental Science and Pollution Research 21: 2064-2076 (2014)
AbstractIn order to perform a study of the carcinogenic potential of polycyclic aromatic hydrocarbons (PAH), benzo(a)pyrene equivalent (BaP-eq) concentration was calculated and modelled by a receptor model based on positive matrix factorization (PMF). Nineteen PAH associated to airborne PM10 of Zaragoza, Spain, were quantified during the sampling period 2001-2009 and used as potential variables by the PMF model. Afterwards, multiple linear regression analysis was used to quantify the potential sources of BaP-eq. Five sources were obtained as the optimal solution and vehicular emission was identified as the main carcinogenic source (35 %) followed by heavy-duty vehicles (28 %), light-oil combustion (18 %), natural gas (10 %) and coal combustion (9 %). Two of the most prevailing directions contributing to this carcinogenic character were the NE and N directions associated with a highway, industrial parks and a paper factory. The lifetime lung cancer risk exceeded the unit risk of 8.7 × 10-5 per ng/m3 BaP in both winter and autumn seasons and the most contributing source was the vehicular emission factor becoming an important issue in control strategies.
Publisher version (URL)http://dx.doi.org/10.1007/s11356-013-2116-9
Identifiersdoi: 10.1007/s11356-013-2116-9
issn: 0944-1344
e-issn: 1614-7499
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