(11-0208) Prof. Geoff Smith, University of Georgia

Event Details
  • Date/Time:
    • Tuesday February 8, 2011 - Wednesday February 9, 2011
      3:00 pm - 3:59 pm
  • Location: MoSE 3201A
  • Phone:
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  • Fee(s):
    N/A
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Contact
Shirley Tomes
Chemistry & Biochemistry
Contact Shirley Tomes
404-894-0591
Summaries

Summary Sentence: Prof. Geoff Smith, University of Georgia

Full Summary: Prof. Geoff Smith, University of Georgia Laboratory Studies of the Chemical and Optical Transformations of Organic Aerosols in the Atmosphere Physical Chemistry Seminar Series

Prof. Geoff Smith, University of Georgia

Laboratory Studies of the Chemical and Optical Transformations of Organic Aerosols in the Atmosphere

Physical Chemistry Seminar Series

Aerosol particles ranging in size from a few nanometers to several microns in size play many roles in the atmosphere. Among other things, they influence global warming, climate change and human health. While they are composed of many things, including inorganic species such as ammonium sulfate and other salts, organic species comprise a large fraction of the particles in many environments. Despite their importance in determining how particles evolve chemically in the atmosphere, how they take up water, how they interact with clouds and how they scatter or absorb sunlight, much is still not known about these organic aerosols.

This presentation will highlight recent findings from two projects in my lab designed to learn more about how organic aerosols evolve in the atmosphere. In the first project, the rates of oxidation in particles by gas-phase species such as O3, OH, NO3 and Cl are measured using the Aerosol Chemical Ionization Mass Spectrometer (CIMS) developed in our lab. In the second project, the efficiencies with which oxidized organic particles scatter and absorb UV light are determined using Cavity Ring-Down Spectroscopy. These results will be discussed in the context of how ambient aerosols are “aged” chemically and how their optical properties evolve over time as a result.

For more information contact Prof. Paul Wine (404-894-3425).

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Additional Information

In Campus Calendar
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School of Chemistry and Biochemistry

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Categories
Student sponsored
Keywords
chemistry
Status
  • Created By: Shirley Tomes
  • Workflow Status: Published
  • Created On: Dec 8, 2010 - 8:00pm
  • Last Updated: Oct 7, 2016 - 9:46pm