Measuring Particulate Emissions of Light Duty Passenger Vehicles Using Integrated Particle Size Distribution (IPSD)

Details

• Personal Author:
  Ayala A ; Chang M-CO ; Eiges D ; Hu S ; Huai T ; Jung HS ; Kamboures MA ; Mccarthy MJ ; Quiros DC ; Sardar S ; Zhang M ; Zhang S ; Zhu Y
• Description:
  The California Air Resources Board (ARB) adopted the low emission vehicle (LEV) III particulate matter (PM) standards in January 2012, which require, among other limits, vehicles to meet 1 mg/mi over the federal test procedure (FTP). One possible alternative measurement approach evaluated to support the implementation of the LEV III standards is integrated particle size distribution (IPSD), which reports real-time PM mass using size distribution and effective density. The IPSD method was evaluated using TSI's engine exhaust particle sizer (EEPS, 5.6-560 nm) and gravimetric filter data from more than 250 tests and 34 vehicles at ARB's Haagen-Smit Laboratory (HSL). IPSD mass was persistently lower than gravimetric mass by 56-75% over the FTP tests and by 81-84% over the supplemental FTP (US06) tests. Strong covariance between the methods suggests test-to-test variability originates from actual vehicle emission differences rather than measurement accuracy, where IPSD offered no statistical improvement over gravimetric measurement variability. [Description provided by NIOSH]
• Subjects:
  Air Pollution Occupational Health Particulate Matter Safety
• Keywords:
  Air Pollution Automotive Emissions Particle Size Analysis Particle Sizers Particulates
• ISSN:
  0013-936X
• 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:
  49
• Issue:
  6
• NIOSHTIC Number:
  nn:20055774
• Citation:
  Environ Sci Technol 2015 May; 49(9):5618-5627
• Contact Point Address:
  David C. Quiros, California Air Resources Board 1001 I Street, Sacramento, California 95814, United States
• Email:
  dquiros@arb.ca.gov
• Federal Fiscal Year:
  2015
• Performing Organization:
  University of California Los Angeles
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Environmental Science and Technology
• End Date:
  20270630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f279e827154f78824a6f8a2986d9df354a435c9c21221b89184ebe089727cef7315ab5c1b32a16d2ed2d239461e3f09e7c475d6bf3a8d8724edcc9b6cce048e7
• Download URL:
  https://stacks.cdc.gov/view/cdc/213549/cdc_213549_DS1.pdf
• File Type:
  [PDF - 1.95 MB ]