Quantification and source identification of atmospheric particulate polycyclic aromatic hydrocarbons and their dry deposition fluxes at three sites in Salvador Basin, Brazil, impacted by mobile and stationary sources

Journal of the Brazilian Chemical Society

Gisele O. Da Rocha²  Wilson A. Lopes²  Pedro A. De Paula Pereira²  Pérola De Castro Vasconcellos¹  Fábio S. Oliveira¹  Luiz S. Carvalho²  Liliane Dos Santos Conceição²  Jailson B. De Andrade² 

[1] ,Universidade Federal da Bahia Instituto de Química Salvador BA ,Brazil

关键词: PAH;    GC-MS;    PM10;    TSP;    aerosol dry deposition fluxes;    air pollution;   

DOI  :  10.1590/S0103-50532009000400012

来源: SciELO

【 摘 要 】

The present work has aimed to determine the 16 US EPA priority PAH atmospheric particulate matter levels present in three sites around Salvador, Bahia: (i) Lapa bus station, strongly impacted by heavy-duty diesel vehicles; (ii) Aratu harbor, impacted by an intense movement of goods, and (iii) Bananeira village on Maré Island, a non vehicle-influenced site with activities such as handcraft work and fisheries. Results indicated that BbF (0.130-6.85 ng m-3) is the PAH with highest concentration in samples from Aratu harbor and Bananeira and CRY (0.075-6.85 ng m-3) presented higher concentrations at Lapa station. PAH sources from studied sites were mainly of anthropogenic origin such as gasoline-fueled light-duty vehicles and diesel-fueled heavy-duty vehicles, discharges in the port, diesel burning from ships, dust ressuspension, indoor soot from cooking, and coal and wood combustion for energy production.

【 授权许可】

CC BY   
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