Document Detail


Transport of traffic-related aerosols in urban areas.
MedLine Citation:
PMID:  10989929     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was undertaken to assess the influence of traffic on particulate air pollution in an urban area, and to characterise the short-range transport of the aerosols generated by traffic. The study was conducted in Kraków, a city located in southern Poland with a population of approximately 800,000. Aerosol samples were collected using automatic sampling equipment at five sites located at different distances from the main road in Kraków, ranging from 5 to 1500 m. The sampling set-up allowed standardisation of the results due to continuous determination of the meteorological parameters (temperature, atmospheric pressure, wind speed and direction, rainfall and humidity). Aerosol particles were separated according to aerodynamic diameter into two size fractions: > 1.9 microm (coarse fraction); and 1.9-72 microm (fine fraction). The concentrations of 27 elements were measured in both size fractions (Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Rb, Sr, Zr, Ba, Pb). The multielement analyses were performed by Particle-Induced X-ray Emission (PIXE) spectrometry. Traffic contribution to particulate air pollution was determined on the basis of 13 elements which were present above the detection limit in all samples (Mg, Al, Si, P, S, K, Ca, Ti, Mn, Fe, Cu, Zn, Pb). It was found that the traffic contribution in the coarse size fraction was approximately 80% up to 150 m from the road; it dropped abruptly by a factor of 2 over a distance of 150-200 m and declined further to 20% at 1500 m from the road. Traffic contribution for the fine particle concentrations of individual elements was 50-70% in the close vicinity of the road (5 m); then there was a decrease, followed by an increase at a greater distance from the road. Possible explanations for this behaviour of the fine particles are given.
Authors:
A Wróbel; E Rokita; W Maenhaut
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Science of the total environment     Volume:  257     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-10-18     Completed Date:  2000-10-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  199-211     Citation Subset:  IM    
Affiliation:
Institute of Physics, Jagiellonian University, Kraków, Poland. ufawrobe@cyf-kr.edu.pl
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MeSH Terms
Descriptor/Qualifier:
Aerosols / analysis,  pharmacokinetics
Air Movements
Air Pollutants / analysis,  pharmacokinetics*
Environmental Monitoring
Humans
Metals, Heavy / analysis*
Motor Vehicles
Urban Population
Vehicle Emissions / analysis*
Chemical
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants; 0/Metals, Heavy; 0/Vehicle Emissions

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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