Water Mediated Equilibrium Between Pyruvic Acid and its Geminal Diol Counterpart
Abstract
The purpose of our study is a spectroscopic infrared (IR) investigation of water mediated equilibrium of an oxidized atmospheric chromophore, pyruvic acid, and its geminal diol counterpart. Their fundamental vibrational spectra were assigned and analyzed for the effects of intra- and intermolecular hydrogen bonding. The IR spectra are useful in probing the differences in their structures and hydrogen bonding tendencies. The equilibrium between the two molecules was determined for conditions where only very small hydrates are present by isolating these in a carbon tretrachloride (CCl4) matrix, using the frequencies, intensities and linewidths determined from the IR spectra. The implications of this water mediated chemistry to the rate growth of secondary organic aerosols will be discussed.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2009
- Bibcode:
- 2009AGUSM.A23A..04M
- Keywords:
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- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0305 Aerosols and particles (0345;
- 4801;
- 4906);
- 0365 Troposphere: composition and chemistry