Evolution of Particle Number Distribution Near Roadways. Part III: Traffic Analysis and On-Road Size Resolved Particulate Emission Factors

Details

• Personal Author:
  Hinds WC ; Niemeier DA ; Sioutas C ; Wexler AS ; Zhang KM ; Zu YF
• Description:
  On-road size-resolved particulate emission factors were computed using concurrently measured carbon monoxide (CO) as a freeway dilution indicator and correlating roadside particle measurements to CO measurements. The emission factors derived for the total particle number agree well with previous on-road investigations. However, this study extends this analysis to produce unique receptor-dependent, size-resolved, road and grid-level emission factor distributions. Both mileage- and fuel-based particle number and mass emission factors at road and grid levels, along with CO emission factors, are presented and the results from freeways with distinctly different percentages of heavy-duty diesel truck traffic are compared. The effects of plume processing on particle number near roadways are shown to be much more profound than on particle mass, further indicting that the adverse health effects observed near roadways are at least partially related to particle numbers. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollution Carbon Monoxide Occupational Health Particulate Matter Safety Transportation Vehicle Emissions
• Keywords:
  Aerosol Air Pollution Author Keywords: Carbon Monoxide Automotive Emissions Carbon Monoxide Diesel Emissions Mobile Emissions Particle Size Particulates Traffic Ultrafine Particles

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• ISSN:
  1352-2310
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  39
• Issue:
  22
• NIOSHTIC Number:
  nn:20058393
• Citation:
  Atmos Environ 2005 Jul; 39(22):4155-4166
• Contact Point Address:
  Anthony S. Wexler, Department of Mechanical and Aeronautical Engineering, University of California, Davis, CA 95616, USA
• Email:
  aswexler@ucdavis.edu
• CAS Registry Number:
  Carbon monoxide (CAS RN 630-08-0)
• Federal Fiscal Year:
  2005
• Performing Organization:
  University of California Los Angeles
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Atmospheric Environment
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:097c0431515bacb5bd50bab87f6dc553579e46309f055a0e3c012dc10d1164235f5a9769ad5be69652b93055b4fe6a73dcf7c3626ae1ce7fe8fe2b47357df127
• Download URL:
  https://stacks.cdc.gov/view/cdc/221500/cdc_221500_DS1.pdf
• File Type:
  [PDF - 1.67 MB ]