HR: 1340h
AN: A53C-0902    [Abstracts]
TI: Kinetics Studies of the Atmospheric Oxidation of Alkynes
AU: * Elrod, M J
EM: mjelrod@oberlin.edu
AF: Oberlin College, Department of Chemistry , Oberlin, OH 44074 United States
AU: Yeung, L Y
AF: Oberlin College, Department of Chemistry , Oberlin, OH 44074 United States
AU: Pennino, M J
AF: Oberlin College, Department of Chemistry , Oberlin, OH 44074 United States
AU: Miller, A M
AF: Oberlin College, Department of Chemistry , Oberlin, OH 44074 United States
AB: The reaction of peroxy radicals (RO2) - produced in the atmospheric oxidation of hydrocarbons - with nitric oxide (NO) is a key reaction in the formation of ground level ozone in urban environments. Experimental measurements using the Turbulent Flow Chemical Ionization Mass Spectrometric (TF-CIMS) kinetics technique and thermodynamic and kinetic parameters recovered from the MG2MS computational approach are presented in order to elucidate the atmospheric oxidation pathway of 2-butyne. The results that indicate that the atmospheric oxidation of 2-butyne (and probably all alkynes) does not directly lead to peroxy radicals, and thus may have a dramatically lower ability to produce ozone than other hydrocarbon classes.
DE: 0317 Chemical kinetic and photochemical properties
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting