Abstract
The kinetics of the reactions of the NO3 radical with 2-furanaldehyde, 3-furanaldehyde and 5-methyl-2-furanaldehyde have been measured at 298±2K and 760Torr of total pressure using a relative kinetic method. The simultaneous losses of furanaldehydes and a reference compound were followed by FTIR spectroscopy. The rate constants obtained for the NO3 reactions are (in cm3 molecule−1s−1): (1.20±0.28)×10−12 for 2-furanaldehyde, (3.41±0.79)×10−12 for 3-furanaldehyde and (5.51±1.27)×10−12 for 5-methyl-2-furanaldehyde. This study is the first determination of the rate constants for the reaction of NO3 radicals with furanaldehydes. The results are presented and discussed in terms of structure-reactivity relationships. Calculated atmospheric lifetimes reveal that the night-time reaction with the nitrate radical is the most important loss process for these kinds of compounds.
Published Version
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