HPA e Nitro-HPA em Ambiente Semifechado Impactado por Emissão da Combustão de Diesel/Biodiesel (B5)

In order to verify the presence of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAH (NPAH) associated with the fine fraction of particulate matter ([PM.sub.1.0] and [PM.sub.2.5]) from the combustion of diesel/biodiesel mixture (B5), daily samples were carried out in the urban bus station of Lon...

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Bibliographic Details
Published in:Orbital : The Electronic Journal of Chemistry 2015-07, Vol.7 (3), p.245
Main Authors: Sabino, Fabio Cal, Pinto, Jurandir Pereira, Picarelli, Victor Pontes, Amador, Ismael R., Martins, Leila D., Hoffmann, Thorsten, Solci, Maria Cristina
Format: Article
Language:English
Subjects:
Air pollution
Analysis
biodiesel emission
Biomass energy
Combustion
High performance liquid chromatography
Mass spectrometry
nitro-PAH
PAH
Polycyclic aromatic hydrocarbons
toxic pollutants
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Summary:In order to verify the presence of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAH (NPAH) associated with the fine fraction of particulate matter ([PM.sub.1.0] and [PM.sub.2.5]) from the combustion of diesel/biodiesel mixture (B5), daily samples were carried out in the urban bus station of Londrina. A high performance liquid chromatography with mass spectrometry (LC-APCI-MS) was used for the determination of nitro-PAH and the PAHs were determined by high performance liquid chromatography equipped with fluorescence detector (LC-FLD). 9 PAHs and 1-nitropyrene were determined. The concentrations of the PAHs with 4 to 6 rings (fluoranthene, pyrene, crysene, benzo(b)fluoranthene, benzo(k)fluoranthene and dibenzo(a,h)antharacene) were higher in comparison to the lighter PAHs (acenaphthene, fluorene and anthracene). The [SIGMA]PAH associated to the [PM.sub.1.0] corresponded to 66% of the [PM.sub.2.5] with concentrations that exceed the levels recommended by WHO. The diagnostic ratios (DR) of PAHs and NPAH were calculated and the results suggest diesel/biodiesel (B5) emissions. The use of biofuel in Brazil is encouraged and the monitoring of changes in emissions arising from combustion processes is important and necessary to follow the change of air quality and the impact on the environment. Keywords: biodiesel emission; PAH; nitro-PAH; toxic pollutants
ISSN:1984-6428
1984-6428
DOI:10.17807/orbital.v7i3.737