Exposures to Particulate Air Pollution and Nitro-Polycyclic Aromatic Hydrocarbons Among Taxi Drivers in Shenyang, China

Details

• Personal Author:
  Dong L ; Hayakawa K ; Miller-Schulze JP ; Paulsen M ; Simpson CD ; Tamura K ; Tang N ; Toriba A ; Zhang X
• Description:
  Exposures to particulate matter (PM) of both 10-2.5 um (PM10-2.5) and below 2.5 um (PM2.5) were measured for a cohort of taxi drivers in Shenyang, China, during August 2007. PM samples were collected inside and outside the taxi during the drivers' workshifts, and also inside the drivers' homes when they were off-shift. Ambient PM samples were also collected at a stationary location in Shenyang. Elemental carbon (EC) and organic carbon (OC) were also measured in PM collected on quartz filters inside the taxis as well as at the stationary site. Concentrations of three nitro-polycyclic aromatic hydrocarbons (NPAHs), 1-nitropyrene (1NP), 2-nitropyrene (2NP), and 2-nitrofluoranthene (2NFl), were determined in extracts of the PM samples by using a 2D-HPLC-MS/MS method. The 2NP and 2NFl concentrations did not change substantially with sampling location, but the 1NP concentrations were much higher in samples collected inside and outside the taxis as compared with sampling locations that were more removed from traffic. Concentration ratios of specific NPAHs were used to assess the atmospheric conditions in Shenyang during the sampling period. The relatively high ratios of 2NFl/1NP (approximately 8-50) indicate an important contribution from secondary NPAH formation to ambient NPAH levels, especially for the nontaxi samples. The ratios of 2NFl/2NP (2.5-4.3) indicate that 2NFl is primarily formed via the hydroxyl-initiated reaction. Description provided by NIOSH
• Subjects:
  • Air Pollution
  • Automobiles
  • Cohort Studies
  • Hydrocarbons
  • Occupational Health
  • Particulate Matter
  • Polycyclic Aromatic Hydrocarbons
  • Safety
  • Transportation
• Keywords:
  • Particulates
  • Cohort studies
  • Drivers
  • Transportation workers
  • Air quality measurement
  • Polycyclic aromatic hydrocarbons
• ISSN:
  0013-936X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  216-221
• Volume:
  44
• Issue:
  1
• NIOSHTIC Number:
  nn:20054737
• Citation:
  Environ Sci Technol 2010 Jan; 44(1):216-221
• Contact Point Address:
  Christopher D. Simpson, Department of Environmental and Occupational Health Sciences, School of Public Health and Community Medicine, University of Washington
• Email:
  simpson1@u.washington.edu
• Federal Fiscal Year:
  2010
• Performing Organization:
  University of Washington
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Environmental Science and Technology
• End Date:
  20250630
• Download URL:
  https://stacks.cdc.gov/view/cdc/217173/cdc_217173_DS1.pdf
• File Type:
  [PDF - 458.21 KB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:11d68c9adf5be4bdba56aa6077b9f6f8601958a9bfdd03b530cb5708a3394808e76c5155264fba82bef2462dbd0482bf65d9c98839cb776a58f1b5033e5014af