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Reaction of OH Radicals with Acetone: Determination of the Branching Ratio for the Abstraction Pathway at 298 K and 1 Torr |
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| Authors: | Estelle Turpin Christa Fittschen Alexandre Tomas Pascal Devolder |
| Institution: | (1) Physico-Chimie des Processus de Combustion et de l'Atmosphère (PC2A), UMR CNRS 8522 and Fédération de Recherche CERLA CNRS FR 2416, Université de Sciences et Technologies de Lille, F-59655 Villeneuve d'Ascq Cedex, France;(2) Département Chimie et Environnement 941, rue Charles Bourseul –, École des Mines de Douai, B.P. 838, F-59508 DOUAI Cedex, France |
| Abstract: | We have determined the 2-oxo-propyl CH3C(O)CH2 (sometimes called 1-methylvinoxy or acetonyl) radical yield for the reaction of acetone with OH radical relative to the 2-oxo-propyl yields for the reactions of F- and Cl atoms with acetone using the Discharge Flow technique. The 2-oxo-propyl radical has been monitored by Laser Induced Fluorescence LIF at short reaction times in the systems: OH + acetone (R1), F + acetone (R2), and Cl + acetone (R3). From these measurements we have deduced the branching ratio for the 2-oxo-propyl radical formation in the title reaction to be in the range 0.8  R 1. |
| Keywords: | acetone Discharge Flow/LIF technique OH radical 1-methyl vinoxy Upper Troposphere Lower Stratosphere (UTLS) |
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