CARBON MONOXIDE IN THE URBAN ATMOSPHERE

The carbon monoxide (CO) concentrations encountered by pedestrians and workers in the streets of a large metropolis were monitored by a reliable and sensitive portable detector (the Ecolyzer). Up to 1,000 observations per day were collected for several months during the summer and fall of 1973. The CO levels ranged from 10 to 50 ppm (varying with wind speed and direction, atmospheric stability, traffic density, and the height of nearby buildings). Much higher average concentrations were found in such adverse sites as poorly ventilated underpasses and underground garages. Street closures for a pedestrian mall reduced levels on the mall to around the general urban background without large increases in readings on adjoining streets.

• Corporate Authors:

  American Medical Association

  535 North Dearborn Street
  Chicago, IL  United States  60610
• Authors:
  • Wright, G R
  • Shephard, R J
• Publication Date: 1975-3

Media Info

• Pagination: p. 123-129
• Serial:
  • Archives of Environmental Health
  • Volume: 30
  • Issue Number: 3
  • Publisher: Heldref Publications

Subject/Index Terms

• TRT Terms: Atmosphere; Carbon monoxide; Metropolitan areas; Monitoring; Pedestrian malls; Underground parking garages; Underpasses; Urban areas
• Old TRIS Terms: Underground garages; Urban atmospheres
• Subject Areas: Economics; Highways; Society;

Filing Info

• Accession Number: 00084324
• Record Type: Publication
• Files: TRIS
• Created Date: May 1 1975 12:00AM