HR: 0830h
AN: A51F-0736    [PDF]
TI: Laboratory Investigations of Aerosol Reactions Using Chemical Ionization Mass Spectrometry
AU: * Smith, G D
EM: gsmith@chem.uga.edu
AF: University of Georgia, 1001 Cedar St., Chemistry Building, Athens, GA 30602-2556 United States
AU: Hearn, J
EM: jhearn@chem.uga.edu
AF: University of Georgia, 1001 Cedar St., Chemistry Building, Athens, GA 30602-2556 United States
AB: The technique of chemical ionization mass spectrometry (CIMS) has been used for the direct, real-time analysis of aerosols in the study of gas-particle reactions. The use of multiple reagent ions, both positive and negative, allows detection of a wide range of particle constituents, including organic species, such as aldehydes, ketones, carboxylic acids, alcohols and alkanes, as well as halogenated molecules and nitrates. Thermal vaporization of the particles coupled with CIMS provides a relatively low degree of fragmentation of many condensed-phase organic species thereby enhancing identification and quantification. Recent results using this technique in laboratory studies of gas-particle reactions of atmospheric significance will be presented.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0317 Chemical kinetic and photochemical properties
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting