Neighborhood-Scale Spatial Models of Diesel Exhaust Concentration Profile Using 1-Nitropyrene and Other Nitroarenes

Details

• Personal Author:
  Beaudet, Nancy ; Fox JR ; Kaufman JD ; Larson TV ; Magzamen S ; Oron AP ; Paulsen M ; Schulte JK ; Simpson CD
• Description:
  With emerging evidence that diesel exhaust exposure poses distinct risks to human health, the need for fine-scale models of diesel exhaust pollutants is growing. We modeled the spatial distribution of several nitrated polycyclic aromatic hydrocarbons (NPAHs) to identify fine-scale gradients in diesel exhaust pollution in two Seattle, WA neighborhoods. Our modeling approach fused land-use regression, meteorological dispersion modeling, and pollutant monitoring from both fixed and mobile platforms. We applied these modeling techniques to concentrations of 1-nitropyrene (1-NP), a highly specific diesel exhaust marker, at the neighborhood scale. We developed models of two additional nitroarenes present in secondary organic aerosol: 2-nitropyrene and 2-nitrofluoranthene. Summer predictors of 1-NP, including distance to railroad, truck emissions, and mobile black carbon measurements, showed a greater specificity to diesel sources than predictors of other NPAHs. Winter sampling results did not yield stable models, likely due to regional mixing of pollutants in turbulent weather conditions. The model of summer 1-NP had an R2 of 0.87 and cross-validated R2 of 0.73. The synthesis of high-density sampling and hybrid modeling was successful in predicting diesel exhaust pollution at a very fine scale and identifying clear gradients in NPAH concentrations within urban neighborhoods. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Air Pollution Hydrocarbons Occupational Health Particulate Matter Polycyclic Aromatic Hydrocarbons Safety
• Keywords:
  Aerosol Sampling Air Pollutants Air Pollution Sampling Air Quality Measurement Diesel Exhaust Particulates Polycyclic Aromatic Hydrocarbons
• ISSN:
  0013-936X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 10 ; OSHA Region 8 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  49
• Issue:
  22
• NIOSHTIC Number:
  nn:20063683
• Citation:
  Environ Sci Technol 2015 Nov; 49(22):13422-13430
• Contact Point Address:
  Jill K. Schulte, University of Washington, Box 357234, Seattle, Washington 98195-7234, United States
• Email:
  jks33@u.washington.edu
• CAS Registry Number:
  1-Nitropyrene (CAS RN 5522-43-0)
• Federal Fiscal Year:
  2016
• Performing Organization:
  University of Washington
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Environmental Science and Technology
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:276d568ad6610e93c963cbe2d4a6c0382fdae9245c6e3689a9952b82c4ad29a915213758221e2101a5aa08a7ec4bff6a5165e885980d59ade4ca3ed943be0d0e
• Download URL:
  https://stacks.cdc.gov/view/cdc/222244/cdc_222244_DS1.pdf
• File Type:
  [PDF - 1.68 MB ]