A STUDY OF THE HORIZONTAL AND VERTICAL PROFILE OF SUBMICROMETER PARTICLES IN RELATION TO A BUSY ROAD

Epidemiological studies consistently report a link between fine particulate pollution and illness. Motor vehicle emissions are considered to be the main source of fine particles in ambient air in urban areas that are not directly affected by industrial emissions. The aim of this paper was to assess the influence of a major arterial road on concentration levels of airborne fine particles in its vicinity. Measurements of over 500 particle size distributions, in the particle range 16-626 nm, were made using 2 scanning mobility particle sizers. A comparison of the recorded values from differing locations is discussed, with reference made to topographic and climatic influences. Both horizontal and vertical profile measurements of fine particle number size distributions are described. With the exception of measurements in close proximity to the freeway, the horizontal profile measurements did not provide evidence of a statistically significant difference in fine particle number concentration with respect to distance at ground level up to a distance of 200 m within the study area. The vertical profile measurements also revealed no significant correlation between height and particle concentration. However, for buildings in the immediate proximity to the arterial road, concentrations around the building envelope are very high and are comparable to those in the immediate vicinity of the road, indicating undiluted concentrations drawn directly from the freeway. This finding has a significant implication for the management of indoor air quality in buildings located in the immediate vicinity of major roads.

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    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Morawska, L
    • THOMAS, S
    • Gilbert, D
    • Greenaway, C
    • Rijnders, E
  • Publication Date: 1999-4

Language

  • English

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  • Accession Number: 00798767
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 20 2000 12:00AM