Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6115

Effective Henry's law constants of glyoxal, glyoxylic acid, and glycolic acid

Authors Ip, H. S. Simon
Huang, X. H. Hilda
Yu, Jian Zhen
Issue Date 2009
Source Geophysical research letters , v. 36, (1), 2009, JAN 6, article number L01802
Summary The Henry's law constants of glyoxal, glycolic acid and glyoxylic acid in pure water were determined over the range of 278 and 308 K for the first time by a bubble column technique. These compounds were chosen because of their perceived involvement in the formation of secondary organic aerosol through in-cloud processing pathways. The experimentally determined Henry's law constants are: glyoxal, K-H = 4.19 x 10(5) x exp[(62.2 x 10(3)/R) x (1/T - 1/298)]; glycolic acid, K-H = 2.83 x 10(4) x exp[(33.5 x 10(3)/R) x (1/T - 1/298)]; and glyoxylic acid, K-H = 1.09 x 10(4) x exp[(40.0 x 10(3)/R) x (1/T - 1/298)]. The Henry's law constants of glyoxal in the presence of sodium chloride and sodium sulfate were also determined at 298 K. While the glyoxal KH is enhanced by less than three times in the presence of chloride in the range of 0.05-4.0 M ionic strength, the presence of sulfate at 0.03 M ionic strength increases the glyoxal KH by 50 times. Citation: Ip, H. S. S., X. H. H. Huang, and J. Z. Yu ( 2009), Effective Henry's law constants of glyoxal, glyoxylic acid, and glycolic acid, Geophys. Res. Lett., 36, L01802, doi: 10.1029/2008GL036212.
Subjects
ISSN 0094-8276
Rights An edited version of this paper was published by American Geophysical Union. Copyright 2009. To view the published open abstract, go to http://dx.doi.org and enter the DOI:10.1029/2008GL036212
Language English
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