Peer-Reviewed Journal Details
Mandatory Fields
O'Dwyer, M. A.; Carey, T. J.; Healy, R. M.; Wenger, J. C.; Picquet-Varrault, B.; Doussin, J-F.
Zeitschrift Fur Physikalische Chemie
The gas-phase ozonolysis of 1-penten-3-ol, (Z)-2-penten-1-ol and 1-penten-3-one: kinetics, products and secondary organic aerosol formation.
Scopus: 8 ()
Optional Fields
The gas-phase ozonolysis of the biogenic unsaturated compounds 1-penten-3-ol, (Z)-2-penten-1-ol and 1-penten-3-one has been investigated in two atmospheric simulation chambers. The following rate coefficients (in units of 10−17 cm3 molecule−1 s−1) were determined at atmospheric pressure and 2932 K using an absolute rate method: 1-penten-3-ol, (1.640.15); (Z)-2-penten-1-ol, (11.50.66); 1-penten-3-one, (1.170.15). Reaction products were identified by in situ FTIR spectroscopy and gas chromatography mass spectrometry (GC-MS). The major products and their average molar yields in the presence of a radical scavenger at relative humidity < 1% were: formaldehyde (0.490.02), 2-hydroxybutanal (0.460.03) and propanal (0.150.02) from 1-penten-3-ol; propanal (0.390.03) and glycolaldehyde (0.430.04) from (Z)-2-penten-1-ol; formaldehyde (0.370.02) and 2-oxobutanal (0.490.03) from 1-penten-3-one. The formation of secondary organic aerosol was also observed with yields ranging from 0.130.17 for the unsaturated alcohols. Significantly lower yields of around 0.03 were measured for 1-penten-3-one. The results of this work are used to determine atmospheric lifetimes and reaction mechanisms for the gas-phase ozonolysis of 1-penten-3-ol, (Z)-2-penten-1-ol and 1-penten-3-one. The broader atmospheric implications of this work are also discussed.
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