Sources, Transformation, and Health Implications of PAHs and Their Nitrated, Hydroxylated, and Oxygenated Derivatives in PM2.5 in Beijing

Details

• Personal Author:
  Fang Y ; Hu D ; Li R ; Lin Y ; Ma Y ; Qiu X ; Wang J ; Zhu Y
• Description:
  Fine particulate matter (PM2.5) is a significant health issue in Chinese megacities. However, little information is available regarding the PM2.5-bound toxic organics, especially their sources, atmospheric transformations, and health implications. In this study, we assessed the levels of polycyclic aromatic hydrocarbons (PAHs) and their nitrated, hydroxylated, and oxygenated derivatives (i.e., NPAHs, OHPAHs, and OPAHs, respectively) in PM2.5 collected in Beijing over a 1 year period. The median concentration of 23 PAHs, 15 NPAHs, 16 OHPAHs, and 7 OPAHs in PM2.5 was 53.8, 1.14, 1.40, and 3.62 ng m-3, respectively. Much higher concentrations and mass percentages for all species were observed in the heating season, indicating a higher toxicity of PM2.5 during this period of time. Positive matrix factorization was applied to apportion the sources of PAHs and their derivatives. It was found that traffic emissions in the nonheating season, and coal combustion and biomass burning in the heating season, were the major primary sources of PAHs and their derivatives. Secondary formation, however, contributed significantly to the derivatives of PAHs (especially NPAHs and OPAHs) in the nonheating season, suggesting significant impacts of atmospheric transformation on the toxicity of PM2.5. [Description provided by NIOSH]
• Subjects:
  Air Pollution Hydrocarbons Occupational Health Particulate Matter Polycyclic Aromatic Hydrocarbons Safety
• Keywords:
  Air Pollution Author Keywords: Fine Particulate Matter (PM2.5) Automotive Emissions Beijing Heat Production PAHs And The Derivatives Particulates Polycyclic Aromatic Hydrocarbons Secondary Formation Source Apportionment Toxicity Ultrafine Particles

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• ISSN:
  0148-0227
• 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:
  120
• Issue:
  14
• NIOSHTIC Number:
  nn:20055769
• Citation:
  J Geophys Res 2015 Jul; 120(14):7219-7228
• Contact Point Address:
  Xinghua Qiu, State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, and Center for Environment and Health, Peking University, Beijing, China
• Email:
  xhqiu@pku.edu.cn
• Federal Fiscal Year:
  2015
• Performing Organization:
  University of California Los Angeles
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Journal of Geophysical Research
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:753b925382887a575fdeaa01c9599f9846bfa2b5f2d979d0ad22ed3d2e54062e977b2fd74f5dcbfa0e8f52c7fe628c888239feea79f53297f62f5719088f7483
• Download URL:
  https://stacks.cdc.gov/view/cdc/213545/cdc_213545_DS1.pdf
• File Type:
  [PDF - 822.34 KB ]