@article {17373,
	title = {Heterogeneous Chemistry of Glyoxal on Acidic Solutions. An Oligomerization Pathway for Secondary Organic Aerosol Formation},
	journal = {Journal of Physical Chemistry AJournal of Physical Chemistry AJournal of Physical Chemistry A},
	volume = {119},
	number = {19},
	year = {2015},
	note = {Ci6yvTimes Cited:7Cited References Count:52},
	month = {May 14},
	pages = {4457-4463},
	abstract = {The heterogeneous chemistry of glyoxal on sulfuric acid surfaces has been investigated at various acid concentrations and temperatures, utilizing a low-pressure fast flow laminar reactor coupled to an ion drift-chemical ionization mass spectrometer (ID-CIMS). The uptake coefficient (gamma) of glyoxal ranges from (1.2 +/- 0.06) x 10(-2) to 2.5 +/- 0.01) x 10(-3) for 60-93 wt \% H2SO4, at 253-273 K. The effective Henry{\textquoteright}s Law constant (H*) ranges from (98.9 +/- 4.9) x 10(5) to (1.6 +/- 0.1) x 10(5) M atm(-1) for 60-93 wt \% at 263-273 K. Both the uptake coefficient and Henry{\textquoteright}s Law constant increase with decreasing acid coneenttation and temperature. Our results reveal a reaction Mechanism of hydration followed by oligomerization for glyoxal on acidic media, indicating an efficient aqueous reaction of glyoxal on hygroscopic particles leading to secondary organic aerosol formation.},
	keywords = {atmospheric photooxidation products, h2so4/hno3/h2o, m-xylene, mass-spectrometry, methylglyoxal, oh addition-reaction, physical-chemistry, sulfate aerosols, sulfuric-acid, toluene},
	isbn = {1089-5639},
	author = {Gomez, M. E. and Y. Lin and Guo, S. and Zhang, R. Y.}
}
