Article,

Kinetic study of gas-phase reactions of pinonaldehyde and structurally related compounds

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International Journal of Chemical Kinetics, 29 (7): 527--533 (January 1997)

Abstract

Rate constants for the reactions of OH, NO3, and O-3 with pinonaldehyde and the structurally related compounds 3-methylbutanal, 3-methylbutan-2-one, cyclobutyl-methylketone, and 2,2,3-trimethyl-cyclobutyl-1-ethanone have been measured at 300 +/- 5 K using on-line Fourier transform infrared spectroscopy. The rate constants obtained for the reactions with pinonaldehyde were: k(OH)=(9.1 +/- 1.8) x 10(-11) cm(3) molecule(-1) s(-1), k(NO3) = (5.4 +/- 1.8) x 10(-14) cm(3) molecule(-1) s(-1), and k(O3) = (8.9 +/- 1.4) x 10(-20) cm(3) molecule(-1) s(-1). The results obtained indicate a chemical lifetime of pinonaldehyde in the troposphere of about two hours under typical daytime conditions, OH = 1.6 x 10(6) molecule cm(-3). (C) 1997 John Wiley and Sons, Inc.

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