||Yields of Glyoxal and Methylglyoxal from the NOx-Air Photooxidations of Toluene and m- and p-Xylene.
Tuazon, E. C. ;
Atkinson, R. ;
Mac Leod, H. ;
Biermann, H. W. ;
Winer, A. M. ;
||California Univ., Riverside. Statewide Air Pollution Research Center.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Photochemical reactions ;
Air pollution control ;
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Fourier transform infrared absorption spectroscopy and differential optical absorption spectroscopy have been used to determine the yields of glyoxal and methylglyoxal from the reaction of hydroxyl radicals with toluene, m-xylene and p-xylene. The yields of glyoxal for the three hydrocarbons ranged from 10 to 20%. The yields of methylglyoxal ranged from 10 to 26%. These yields are too low to be explained by any currently available mechanism of aromatic hydrocarbon oxidation.