Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2854
Título: Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal
Autor: Pio, Casimiro
Mirante, Fátima
Oliveira, Cesar
Matos, Manuel
Caseiro, Alexandre
Oliveira, Cristina
Querol, Xavier
Alves, Célia
Martins, Natércia
Cerqueira, Mário
Camões, Filomena
Silva, Hugo
Plana, Feliciano
Palavras-chave: Road vehicle aerosol emissions
Road tunnel experiments
Aerosol size segregated composition
Carbonaceous aerosol
Trace elements
Soluble ions
Particulate matter emissions
Trace-metal concentrations
Secondary organic-carbon
Source apportionment
Street dusts
Data: Jun-2013
Editora: Pergamon-Elsevier Science LTD
Citação: PIO, Casimiro; MIRANTE, Fatima; OLIVEIRA, Cesar; MATOS, Manuel; CASEIRO, Alexandre; OLIVEIRA, Cristina; QUEROL, Xavier; ALVES, Celia; MARTINS, Natercia; CERQUEIRA, Mario; CAMOES, Filomena; SILVA, Hugo; PLANA, Feliciano - Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal. Atmospheric Environment. ISSN 1352-2310. Vol. 71 (2013), p. 15-25.
Resumo: An atmospheric aerosol study was performed in 2008 inside an urban road tunnel, in Lisbon, Portugal. Using a high volume impactor, the aerosol was collected into four size fractions (PM0.5, PM0.5-1, PM1-2.5 and PM2.5-10) and analysed for particle mass (PM), organic and elemental carbon (OC and EC), polycyclic aromatic hydrocarbons (PAH), soluble inorganic ions and elemental composition. Three main groups of compounds were discriminated in the tunnel aerosol: carbonaceous, soil component and vehicle mechanical wear. Measurements indicate that Cu can be a good tracer for wear emissions of road traffic. Cu levels correlate strongly with Fe, Mn, Sn and Cr, showing a highly linear constant ratio in all size ranges, suggesting a unique origin through sizes. Ratios of Cu with other elements can be used to source apportion the trace elements present in urban atmospheres, mainly on what concerns coarse aerosol particles. (C) 2013 Elsevier Ltd. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2854
ISSN: 1352-2310
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.