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Article
Assessment of Exposure to Airborne Ultrafine Particles in the Urban Environment of Lisbon, Portugal
Journal of Air and Waste Management Association (2012)
  • João F Gomes
Abstract
The aim of this study was the assessment of exposure to ultrafine in the urban environment of Lisbon, Portugal, due to automobile traffic, and consisted of the determination of deposited alveolar surface area in an avenue leading to the town center during late spring. This study revealed differentiated patterns for weekdays and weekends, which could be related with the fluxes of automobile traffic. During a typical week, ultrafine particles alveolar deposited surface area varied between 35.0 and 89.2 mm2/cm3, which is comparable with levels reported for other towns such in Germany and the United States. These measurements were also complemented by measuring the electrical mobility diameter (varying from 18.3 to 128.3 nm) and number of particles that showed higher values than those previously reported for Madrid and Brisbane. Also, electron microscopy showed that the collected particles were composed of carbonaceous agglomerates, typical of particles emitted by the exhaustion of diesel vehicles.
Keywords
  • Ultrafine particulate ; Lisbon
Publication Date
Spring 2012
Publisher Statement
DOI: 10.1080/10962247.2012.658957
Citation Information
João F Gomes. "Assessment of Exposure to Airborne Ultrafine Particles in the Urban Environment of Lisbon, Portugal" Journal of Air and Waste Management Association (2012)
Available at: http://works.bepress.com/joao_gomes/50/