Environ. Sci. Technol. 2009, 43, 4213–4218
Climate-Relevant Properties of Diesel Particulate Emissions: Results from a Piggyback Study in Bangkok, Thailand R . S U B R A M A N I A N , †,# E K B O R D I N W I N I J K U L , †,‡ T A M I C . B O N D , * ,† WORRARAT THIANSATHIT,§ NGUYEN THI KIM OANH,§ ITTIPOL PAW-ARMART,| AND K. G. DULEEP⊥ Department of Civil and Environmental Engineering, University of Illinois, Urbana, Illinois 61801, DIESEL Project, PADCO Inc., Bangkok, Thailand, Environmental Engineering and Management, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand, Automotive Air Pollution Division, Pollution Control Department, Sam Sen Nai, Phayathai, Bangkok 10400, Thailand, and EEA, Inc., Arlington, Virginia
Received November 15, 2008. Revised manuscript received February 21, 2009. Accepted April 8, 2009.
A “piggyback” approach is used to characterize aerosol emissions to obtain input for large-scale models of atmospheric transport. Particulate and gaseous emissions from diesel trucks, light-duty vehicles, and buses were measured by the Bangkok Pollution Control Department as part of the Developing Integrated Emissions Strategies for Existing Land Transport (DIESEL) project. We added filter-based measurements of carbonaceous composition, particulate light absorption, and water uptake. For 88 “normal” diesel vehicles (PM emission rate
