Reaction of HO with Glycolaldehyde, HOCH2CHO: Rate Coefficients (240−362 K) and Mechanism
- 12 January 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry A
- Vol. 111 (5), 897-908
- https://doi.org/10.1021/jp0649504
Abstract
Absolute rate coefficients for the title reaction, HO + HOCH2CHO -> products (R1), were measured over the temperature range 240-362 K using the technique of pulsed laser photolytic generation of the HO radical coupled to detection by pulsed laser induced fluorescence. Within experimental error, the rate coefficient, k(1), is independent of temperature over the range covered and is given by k(1)(240-362 K) = (8.0 +/- 0.8) x 10(-12) cm(3) molecule(-1) s(-1). The effects of the hydroxy substituent and hydrogen bonding on the rate coefficient are discussed based on theoretical calculations. The present results, which extend the database on the title reaction to a range of temperatures, indicate that R1 is the dominant loss process for HOCH2CHO throughout the troposphere. As part of this work, the absorption cross-section of HOCH2CHO at 184.9 nm was determined to be (3.85 +/- 0.2) x 10(-18) cm(2) molecule(-1), and the quantum yield of HO formation from the photolysis of HOCH2CHO at 248 nm was found to be (7.0 +/- 1.5) x 10(-2).status: publisheKeywords
This publication has 37 references indexed in Scilit:
- Photolysis and OH-Initiated Oxidation of Glycolaldehyde under Atmospheric ConditionsThe Journal of Physical Chemistry A, 2005
- Rate Constants for the Gas-Phase Reactions of OH Radicals with a Series of Hydroxyaldehydes at 296 ± 2 KThe Journal of Physical Chemistry A, 2004
- An Atmospheric Chemistry Interpretation of Mass Scans Obtained from a Proton Transfer Mass Spectrometer Flown over the Tropical Rainforest of SurinamJournal of Atmospheric Chemistry, 2001
- The Atmospheric Chemistry of GlycolaldehydeJournal of Atmospheric Chemistry, 2001
- Rate Coefficients for Reaction of OH with Acetone between 202 and 395 KThe Journal of Physical Chemistry A, 2000
- Laboratory and Theoretical Study of the Oxy Radicals in the OH- and Cl-Initiated Oxidation of EtheneThe Journal of Physical Chemistry A, 1998
- Atmospheric chemistry and distribution of formaldehyde and several multioxygenated carbonyl compounds during the 1995 Nashville/Middle Tennessee Ozone StudyJournal of Geophysical Research: Solid Earth, 1998
- Emissions from smoldering combustion of biomass measured by open‐path Fourier transform infrared spectroscopyJournal of Geophysical Research: Solid Earth, 1997
- A global model of natural volatile organic compound emissionsJournal of Geophysical Research: Solid Earth, 1995
- Fourier transform infrared study of the kinetics and mechanisms for the chlorine-atom- and hydroxyl-radical-initiated oxidation of glycolaldehydeThe Journal of Physical Chemistry, 1987