Size-segregated chemical composition of aerosol emissions in an

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Size-segregated chemical composition of aerosol emissions in an
Title: Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal
Author(s): Pio, Casimiro [1]; Mirante, Fatima [1]; Oliveira, Cesar [1,2]; Matos, Manuel [3]; Caseiro, Alexandre [1];
Oliveira, Cristina ; Querol, Xavier ; Alves, Celia ; Martins, Natercia ; Cerqueira, Mario ; Camoes,
Filomena ; Silva, Hugo ; Plana, Feliciano
Source: Atmospheric Environment Volume: 71
Pages: 15-25 DOI: 10.1016/j.atmosenv.2013.01.037 Published: Jun 2013
Document Type: Article
Language: English
Abstract: 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.
Author Keywords: Road vehicle aerosol emissions; Road tunnel experiments; Aerosol size segregated
composition; Carbonaceous aerosol; Trace elements; Soluble ions
Keywords Plus: Particulate matter emissions; Trace-metal concentrations; Secondary organic-carbon; Road;
Source apportionment; Street dusts; Kaisermuhlen-tunnel; Motor-vehicles; Mass-balance; Hong-Kong
Reprint Address: Pio, C (reprint author) - Univ Aveiro, Dept Environm & Planning, CESAM, Campus Santiago,
P-3810193 Aveiro, Portugal.
[1] Univ Aveiro, Dept Environm & Planning, CESAM, P-3810193 Aveiro, Portugal
[2] Univ Minho, Chem Res Ctr, CQ UM, P-4710057 Braga, Portugal
[3] Dept Chem, ISEL, P-1959007 Lisbon, Portugal
[4] Univ Lisbon, Fac Sci, CCMM DQB, P-1749016 Lisbon, Portugal
[5] CSIC, Inst Environm Assessment & Water Res, IDAEA, E-08028 Barcelona, Spain
[6] Univ Aveiro, Ceram & Glass Engn Dept, CICECO, P-3810193 Aveiro, Portugal
E-mail Addresses: [email protected]
Funding Agency
Grant Number
Portuguese Science Foundation PTDC/AMB/65699/2006
Publisher: Pergamon-Elsevier Science LTD
Publisher Address: The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England
ISSN: 1352-2310
Citation: 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.
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