Exposures to Air Pollution and Noise from Multi-Modal Commuting in a Chinese City

Details

• Personal Author:
  Austin E ; Lan B ; Liu Y ; Seto E ; Shirai J ; Yang C
• Description:
  Background: Modern urban travel includes mixtures of transit options, which potentially impact individual pollution exposures and health. This study aims to investigate variations in traffic-related air pollution and noise levels experienced in traffic in Chengdu, China. Methods: Real-time PM2.5, black carbon (BC), and noise levels were measured for four transportation modes (car, bus, subway, and shared bike) on scripted routes in three types of neighborhoods (urban core, developing neighborhood, and suburb). Each mode of transportation in each neighborhood was sampled five times in summer and winter, respectively. After quality control, mixed effect models were built for the three pollutants separately. Results: Air pollutants had much higher concentrations in winter. Urban Core had the highest PM2.5 and BC concentrations across seasons compared to the other neighborhoods. The mixed effect model indicated that car commutes were associated with lower PM2.5 (-34.4 µg/m3; 95% CI: -47.5, -21.3), BC (-2016.4 ng/m3; 95% CI: -3383.8, -648.6), and noise (-9.3 dBA; 95% CI: -10.5, -8.0) levels compared with other modes; subway commutes had lower PM2.5 (-11.9 µg/m3; 95% CI: 47.5, -21.3), but higher BC (2349.6 ng/m3; 95% CI: 978.1, 3722.1) and noise (3.0 dBA; 95% CI: 1.7, 4.3) levels than the other three modes of transportation. Conclusion: Personal exposure to air pollution and noise vary by season, neighborhood, and transportation modes. Exposure models accounting for environmental, meteorological, and behavioral factors, and duration of mixed mode commuting may be useful for health studies of urban traffic microenvironments. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Air Pollution Noise Noise, Occupational Occupational Health Safety Transportation
• Keywords:
  Air Pollutants Air Pollution Air Quality Monitoring Author Keywords: Multi-modal Commuting Automotive Emissions Noise Noise Exposure Personal Monitoring Seasonal Factors Traffic Related Air Pollution
• ISSN:
  1660-4601
• 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
• Volume:
  16
• Issue:
  14
• NIOSHTIC Number:
  nn:20063858
• Citation:
  Int J Environ Res Public Health 2019 Jul; 16(14):2539
• Contact Point Address:
  Yisi Liu, Department of Environmental and Occupational Health Sciences, School of Public Health, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA
• Email:
  yisiliu@uw.edu
• Federal Fiscal Year:
  2019
• Performing Organization:
  University of Washington
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  International Journal of Environmental Research and Public Health
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:510c51cb7367d4b1688fe353febb3b8ba44e23772647316da1d6c4a710253b644f69daa01ca593be8e7fa8bf08ee3cb81d91bcf3b4cc3c43445ae1d3f9991c0a
• Download URL:
  https://stacks.cdc.gov/view/cdc/222403/cdc_222403_DS1.pdf
• File Type:
  [PDF - 2.71 MB ]