February 22, 2010 Meeting
Topic: Aerosol Mass Spectrometry: How it works and what it tells us about the air we breathe
Speaker: Professor Murray Johnston, Department of Chemistry, University of Delaware
Time: 7:30 pm
Location: Shimadzu Scientific Instrument, Inc. Training Center 7100 Riverwood Drive, Columbia, MD 21046
Dinner: Please join co-chairs Alexei Gapeev, Berk Oktem and the speaker for dinner at for dinner at the Ram’s Head Tavern at Savage Mill, 8600 Foundry Street, Savage, MD 20763 at 5:00 pm. Contact Alexei Gapeev (gapeev@umbc.edu ) and let him know you will be there.
Abstract: Aerosol mass spectrometers measure the time-resolved chemical composition of airborne particles. Our laboratory has developed several instruments, each based on a different detection principle targeting a specific combination of particle size and chemical components – from the nanometer to micrometer size range and from semivolatile organic compounds to refractory inorganic materials. These instruments have been used in the field to characterize ambient air and in the laboratory to study chemical processes associated with particle formation and growth. This presentation will provide an overview of the methodology associated with these instruments and what they tell us about atmospheric processes.
