Particle-associated polycyclic aromatic hydrocarbons and their dry deposition fluxes from a bus-station in the Rio de Janeiro metropolitan area, Brazil

• Published in: Journal of the Brazilian Chemical Society
• Main Authors: Machado, Mauro C. S., Loyola, Josiane, Quiterio, Simone L., Rocha, Gisele Olímpio da, Andrade, Jailson Bittencourt de, Arbilla, Graciela
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2009
• Subjects: polycyclic aromatic hydrocarbons; TSP; PM10; Diagnostic ratios; Bus station; Dry deposition; Diesel emissions; IPY
• Online Access: http://www.repositorio.ufba.br/ri/handle/ri/5899

p. 1565-1573 Total particulate matter and PM10 samples were collected from August 2006 to February 2007 in Mayor José Carlos Lacerda bus station. 16 priority PAHs compounds emitted by heavy-duty vehicles on typical conditions of operation were analyzed by using GC/MS. ΣPAH accounted for 0.0018% of the TSP mass and 0.0012% of the PM10 mass. Total PAH contents on the particle phase were 3.57 ng m-3 and 2.59 ng m-3 for TSP and PM10, respectively. Contributions of carcinogenic USEPA priority PAHs (B[a]An, B[b]F, B[k]F, B[a]Py, IPy and DB[ah]A) were 1.86 ng m-3 (52% of total PAHs) and 1.40 ng m-3 (54% of total PAHs), for TSP and PM10 samples, respectively. Diagnostic ratios and multivariate statistical analysis were, in general, similar to those reported for soil dust except for the Flt/Flt+Py) ratio, 0.34, compatible with diesel emissions. Dry deposition fluxes were in the range of 0.022-0.603 and 0.016-0.436 μg m-2 day-1 for compounds in TSP and PM10, respectively. São Paulo