Exposure To Ultrafine Particles From Traffic In City Streets And The Urban Atmosphere

Mass-based emission controls (such as Euro – I to IV) are successfully reducing emissions of fine particles from road vehicles, but may have actually increased the emission of ultrafine particles and their persistence in the atmosphere just at a time when growing evidence indicates that these ultraf...

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Bibliographic Details
Main Authors: Longley, I D, Dorsey, J R, Gallagher, M W, Allen, J D, Alfarra, M R, Coe, H
Format: Conference Proceeding
Language:English
Subjects:
Air monitoring
Air quality
Air quality measurements
Atmosphere
Emissions control
Environmental monitoring
Health risk assessment
Health risks
Inhalation
Particulate emissions
Particulate matter
Respiration
Transport properties
Ultrafines
Urban atmosphere
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Summary:Mass-based emission controls (such as Euro – I to IV) are successfully reducing emissions of fine particles from road vehicles, but may have actually increased the emission of ultrafine particles and their persistence in the atmosphere just at a time when growing evidence indicates that these ultrafine particles present the greatest threat to health upon inhalation. These particles have so little mass that they barely register in measurements made by the current urban air quality monitoring network, which measures the mass of particulate matter (PM10). Ultrafine particles also have different dynamic and transport properties to larger particles, leading to more variability in concentrations that may rise and fall inde
ISSN:1746-4498
1743-3509
DOI:10.2495/UT040711