Size-segregated chemical composition of aerosol emissions in an urban road tunnel in Portugal

被引：77
|
作者：
Pio, Casimiro [1 ]
Mirante, Fatima [1 ]
Oliveira, Cesar [1 ,2 ]
Matos, Manuel [3 ]
Caseiro, Alexandre [1 ]
Oliveira, Cristina [4 ]
Querol, Xavier [5 ]
Alves, Celia [1 ]
Martins, Natercia [6 ]
Cerqueira, Mario [1 ]
Camoes, Filomena [4 ]
Silva, Hugo [3 ]
Plana, Feliciano [5 ]
机构：
[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
来源：
ATMOSPHERIC ENVIRONMENT | 2013年 / 71卷
关键词：
Road vehicle aerosol emissions; Road tunnel experiments; Aerosol size segregated composition; Carbonaceous aerosol; Trace elements; Soluble ions; EXHAUST PARTICULATE MATTER; TRACE-METAL CONCENTRATIONS; ON-ROAD; SOURCE APPORTIONMENT; STREET DUSTS; KAISERMUHLEN-TUNNEL; MOTOR-VEHICLES; MASS-BALANCE; PARTICLES; PM2.5;
D O I：
10.1016/j.atmosenv.2013.01.037
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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.
引用
收藏
页码：15 / 25
页数：11
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