Particle-associated polycyclic aromatic hydrocarbons in a suburban region of Rio de Janeiro, Brazil, with industrial and traffic emissions

Journal of the Brazilian Chemical Society

Larissa F. C. S. Marques²  Graciela Arbilla²  Simone L. Quiterio²  Mauro Cesar S. Machado¹ 

[1] ,UFRJ Instituto de Química Departamento de Físico QuímicaRio de Janeiro RJ ,Brazil

关键词: polycyclic aromatic hydrocarbons;    total particulate matter;    PM10;    diagnostic ratios;    vehicular emissions;   

DOI  :  10.1590/S0103-50532009000300017

来源: SciELO

【 摘 要 】

From April 206 to March 2007, total suspended particles (TSP) and PM10 samples were collected at the Campus of FIOCRUZ, situated in a suburban region with intense industrial and commercial activities in Rio de Janeiro (Brazil). The concentrations of 16 selected polycyclic aromatic hydrocarbons (PAHs) were determined by gas chromatography with mass selective detection. Individual concentrations were between the detection limit (acenaphtylene, acenaphthene, anthracene and fluorene) and 6.16 ng m-3 for benzo[b]fluoranthene. The five most abundant PAHs, in TSP, samples were B[b]F, Ipy, Py, Chry and DB[ah]An, and the mean sum of 16 PAHs was 15.53 ng m-3. The same most abundant compounds were obtained in PM10 samples and a total mean mass of 8.99 ng m-3 was determined. Diagnostic ratios were calculated and vehicular emissions were determined as the potential sources for PAHs in particulate matter. The contribution of both light duty and diesel engines is significant, but the cluster and factorial analysis failed to classify clearly in gasoline or diesel emissions.

【 授权许可】

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