title: Kinetics and mechanistic studies of the atmospheric oxidation of alkynes.
abstract: Kinetics studies of the OH-initiated oxidation of 2-butyne, propyne, and acetylene were conducted at 100 Torr and 298 K using turbulent flow chemical ionization mass spectrometry. The major oxidation products were identified, and with the aid of supporting electronic structure thermodynamics calculations, a general OH-initiated oxidation mechanism for the alkynes is proposed. The major product branching ratio and the product-forming rate constants for the 2-butyne-OH adduct + O(2) reaction were experimentally determined as well. The atmospheric implications of the chemical oxidation mechanism and kinetics results are discussed.
authors.affiliation: Department of Chemistry, Oberlin College, Oberlin, Ohio 44074, USA.
authors.forename: Laurence Y
authors.initials: LY
authors.lastname: Yeung
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Pennino
authors.forename: Angela M
authors.initials: AM
authors.lastname: Miller
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Elrod