Department of Environmental Sciences
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Seminar Abstracts
Environmental Sciences Seminar Abstract            

  FIELD AND LABORATORY INVESTIGATIONS OF THE SOURCES AND PROCESSING OF ORGANIC AEROSOL
Peter Decarlo
Drexel University
Department Of Civil, Architectural, And Environmental Engineering

Aerosols are ubiquitous in the earth system. Their effects on climate, human health, and visibility are all dependent on the properties of aerosol particles. In particular the size, shape, chemical composition, and concentration control the effects of aerosols. The organic fraction of aerosol mass has garnered significant interest as it typically makes up the major fraction of the total submicron aerosol mass, and is poorly characterized due to the inherent complexity of the sources and processes of organic species involved.

The High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-AMS) has become a popular tool to study the chemical composition and concentration of organic aerosols. In depth analysis of the data generated by the HR-AMS can be used to describe bulk chemical properties of organic aerosol, in source apportionment studies, and to investigate the chemical processing of aerosol in both the lab and the field. This talk will discuss the direct measurement of ambient aerosols in focused field campaigns, and the use of smog chamber experiments for more detailed investigations of sources of organic aerosol and oxidative processing of emissions.


Last updated: 03/06/2012