Products of the gas-phase reactions of cis-3-hexen-1-ol with OH radicals and O3

Products of the gas-phase reactions of OH radicals (in the presence of NO) and O3 with the biogenic emission cis-3-hexen-1-ol have been investigated using gas chromatography with flame ionization detection (GC-FID), combined gas chromatography-mass spectrometry (GC-MS), gas chromatography with Fourier transform infrared spectroscopy (GC-FTIR), and direct air sampling, atmospheric pressure ionization tandem mass spectrometry (API-MS). Propanal and 3-hydroxypropanal were identified and quantified from the OH radical and O3 radical reactions, with respective formation yields of 0.746 ± 0.067 and 0.48−0.24+0.48 from the OH radical reaction and 0.493 ± 0.075 and 0.33−0.16+0.33 from the O3 reaction. In addition, a hydroxynitrate of molecular weight 179 [CH3CH2CH(OH)CH(ONO2)CH2CH2OH and/or CH3CH2CH(ONO2)CH(OH)CH2CH2OH] and a hydroxycarbonyl of molecular weight 132, expected to be CH3CH2CH(OH)CH(OH)CH2CHO, were observed from the OH radical reaction by API-MS analyses. The reaction mechanisms are discussed.