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Spark Ignition Motor Vehicle Exhaust Particulate Matter Characterization

Published online by Cambridge University Press:  02 July 2020

Douglas A. Blom  and
Ted A. Nolan
Douglas A. Blom
Affiliation:
Metals & Ceramics Division, Materials Analysis User Center Oak Ridge National Laboratory, Oak Ridge, Tennessee37831-6064, USA
Ted A. Nolan
Affiliation:
Metals & Ceramics Division, Materials Analysis User Center Oak Ridge National Laboratory, Oak Ridge, Tennessee37831-6064, USA
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Extract

The Northern Front Range Air Quality Study concluded that for the Denver metropolitan area during 1996 and 1997, 55% of particles with an aerodynamic diameter 50% cutpoint of 2.5 μm (PM2.5) were attributable to motor vehicle exhaust particulates. The health effects of PM2.5 are currently unknown, but are under investigation. It is of vital interest to understand the chemistry, morphology, size distribution and microstructure of motor vehicle exhaust. The techniques of transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS) appear to be well suited for the analysis of the microstructure, morphology and microchemical composition of particulate matter. Previous electron microscopy observations of particulate matter from a variety of sources have found that the chemical composition and crystal structure are characteristics of the source of the particles.

As part of an ongoing research project into the health effects of motor vehicle particulate matter, Southwest Research Institute (SWRI) is performing chassis dynamometer tests of a variety of vehicles and collecting samples from the exhaust stream for analysis.

Type
Sir John Meurig Thomas Symposium: Microscopy and Microanalysis in the Chemical Sciences
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 72 - 73
Copyright
Copyright © Microscopy Society of America

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References

1.)http://nfraqs.cira.colostate.edu/.Google Scholar
2.)Bell, D. C. et al. Discrete Single Particle Microanalysis of Soots. In Proceedings of Air Pollution 99 San Francisco.Google Scholar
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4.) Research sponsored by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies, as part of the Heavy Vehicle Propulsion Materials Program, under contract DE-ACO5-96OOR22464 with Lockheed Martin Energy Research Corporation.Google Scholar