Contribution of the Road Traffic to Air Pollution in the Prague City (Busy Speedway and Suburban Crossroads)

0369312 - ÚCHP 2012 RIV GB eng J - Journal Article
Ondráček, Jakub - Schwarz, Jaroslav - Ždímal, Vladimír - Andělová, Ludmila - Vodička, Petr - Bízek, V. - Tsai, C.-J. - Chen, S.-C. - Smolík, Jiří
Contribution of the Road Traffic to Air Pollution in the Prague City (Busy Speedway and Suburban Crossroads).
Atmospheric Environment. Roč. 45, č. 29 (2011), s. 5090-5100. ISSN 1352-2310. E-ISSN 1873-2844
R&D Projects: GA ČR GAP209/11/1342
Institutional research plan: CEZ:AV0Z40720504
Keywords : road traffic aerosol * number and mass size distribution * chemical composition
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 3.465, year: 2011

Both of the two Results obtained from spectrometers and BLPIs showed that the main contribution of traffic in ultrafine size range can be attributed to direct exhaust emissions, while the coarse fraction was dominated mainly by regional background aerosol with small traces of brake and tyre abrasion as well as the resuspension of the road dust. Chemical analysis demonstrated that most of the water soluble ions can be found in fine fraction of mass distribution and mostly comes from regional background and long range transport. Most of major elements were found in coarse fraction of mass size distribution and it can be attributed to three different sources: abrasion of different vehicle parts (Fe, Cu, Mn and Zn), resuspension of the road dust (Si, Al, Ca) and long range transport or regional background (Ca and K). Elemental carbon concentration (diesel engine emissions) was found to be proportional to traffic intensity.
Permanent Link: http://hdl.handle.net/11104/0203408