On-Roadway In-Cabin Exposure to Particulate Matter: Measurement Results Using Both Continuous and Time-Integrated Sampling Approaches

Details

• Alternative Title:
  Aerosol Sci Technol
• Personal Author:
  Greenwald, Roby ; Bergin, Michael H. ; Yip, Fuyuen ; Boehmer, Tegan ; Kewada, Priya ; Shafer, Martin M. ; Schauer, James J. ; Sarnat, Jeremy A.
• Description:
  The Atlanta Commuters Exposure (ACE) Study was designed to measure in-cabin exposure to roadway particulate pollution and acute health response in a panel of adults with and without asthma following a 2-h scripted route along major highways in Atlanta. This article focuses on methods and results of both continuous and integrated approaches used to measure the concentration of PM| mass, particle number concentration (PNC), black carbon (BC) mass, and particle-bound PAHs, in-cabin noise, PM elemental composition, elemental carbon, organic carbon, water-soluble organic carbon (WSOC) content, and speciation of a broad range of organic compounds including alkanes, hopanes, and PAHs. Speciated PM data indicates that in-cabin particles derive from three non-co-varying processes: the resuspension of road dust containing crustal elements and previously-deposited brake pad residue with a contribution of normal fuel combustion, incomplete combustion processes producing PAHs and carbon particles, and particles ablated from brake pads that have not previously deposited to the roadside environment. Most in-cabin pollutants were elevated during the warm season with the notable exception of PNC. PNC was not found to be correlated with most other pollutants. In-cabin concentrations were marginally higher when windows were open.
• Source:
  Aerosol Sci Technol. 48(6):664-675
• Pubmed ID:
  35923760
• Pubmed Central ID:
  PMC9345602
• Document Type:
  Journal Article
• Funding:
  CC999999/ImCDC/Intramural CDC HHSUnited States/
• Volume:
  48
• Issue:
  6
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha-512:ce324365a769d1271689b208443f1d7f0c6546120e912f473c7d2355bbc9d123bcaa523fd3097c9f8b5458b6ce0de2f399fe9f1306ca04170926733aba5ab343
• Download URL:
  https://stacks.cdc.gov/view/cdc/119987/cdc_119987_DS1.pdf
• File Type:
  [PDF - 994.09 KB ]