Journal
ATMOSPHERIC CHEMISTRY AND PHYSICS
Volume 12, Issue 1, Pages 469-479Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/acp-12-469-2012
Keywords
-
Funding
- NERC [NE/I014381/1]
- NERC [NE/I010505/1, NE/G01972X/1, NE/J009008/1, ncas10006] Funding Source: UKRI
- Natural Environment Research Council [NE/I010505/1, NE/G01972X/1, NE/J009008/1, NE/I014381/1, ncas10006] Funding Source: researchfish
Ask authors/readers for more resources
Gas-phase ethene ozonolysis experiments were conducted at room temperature to determine formic acid yields as a function of relative humidity (RH) using the integrated EXTreme RAnge chamber-Chemical Ionisation Mass Spectrometry technique, employing a CH3I ionisation scheme. RHs studied were <1, 11, 21, 27, 30% and formic acid yields of (0.07 +/- 0.01) and (0.41 +/- 0.07) were determined at <1% RH and 30% RH respectively, showing a strong water dependence. It has been possible to estimate the ratio of the rate coefficient for the reaction of the Criegee biradical, CH2OO with water compared with decomposition. This analysis suggests that the rate of reaction with water ranges between 1x10(-12)-1x10(-15) cm(3) molecule(-1) s(-1) and will therefore dominate its loss with respect to bimolecular processes in the atmosphere. Global model integrations suggest that this reaction between CH2OO and water may dominate the production of HC(O)OH in the atmosphere.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available