Perpustakaan Digital ITB

The effect of a hydroxyl group and its position on the yields of secondary organic aerosol (SOA) formed from OH radical-initiated reactions of the 1- to 5-decanol isomers, 1- and 2-undecanol isomers, and n-decane in the presence of NOx was investigated in a series of environmental chamber experiments. SOA composition was also measured using liquid chromatography, mass spectrometry, and infrared spectroscopy, and gas-phase aldehydes were measured using gas chromatography and proton transfer reaction?mass spectrometry. It was observed that all decanol isomers formed SOA of a similar composition, which consisted of products similar to those known to be formed from the reaction of n-decane but with an added hydroxyl or keto group. SOA yields measured for the decanol isomers were all higher than the yield from n-decane because of the general lowering of product vapor pressures by the added hydroxyl group, but they decreased monotonically as the hydroxyl group moved from the end of the molecule to the middle....