Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/24682
Título: | Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal |
Autor(es): | Pio, Casimiro Mirante, Fátima Oliveira, César João Santos 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 |
Data: | Jun-2013 |
Editora: | Elsevier 1 |
Revista: | Atmospheric Environment |
Resumo(s): | 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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/24682 |
DOI: | 10.1016/j.atmosenv.2013.01.037 |
ISSN: | 1352-2310 |
Versão da editora: | http://dx.doi.org/10.1016/j.atmosenv.2013.01.037 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal.pdf Acesso restrito! | Documento principal | 1,8 MB | Adobe PDF | Ver/Abrir |