@gsmith

Rate constants for the gas-phase reactions of ozone with isoprene, alpha- and beta-pinene, and limonene as a function of temperature

, and . Journal of Physical Chemistry A, 105 (5): 815--822 (January 2001)

Abstract

The rate constants for the gas-phase reactions of ozone with the biogenic hydrocarbons isoprene, alpha- and beta -pinene, and limonene were measured using the relative rate technique over the temperature range 242-363 K and at 760 Torr total pressure. Helium was the diluent gas, and the reactants were detected by on-line mass spectrometry. The following Arrhenius expressions have been determined for these reactions (in units of cm(3) molecule(-1)s(-1)): isoprene, (10.9(-2.17)(+2.70)) x 10(-15) exp-(1998 +/- 63)/T; alpha -pinene, (0.48(-0.18)(+0.29)) x 10(-15) exp-(530 +/- 150)/T; beta -pinene, (1.74(-0.36)(+0.46)) x 10(-15) exp-(1297 +/- 75)/T; and limonene, (2.95(-0.61)(+0.77)) x 10(-15) exp-(783 +/- 72)/T. The Arrhenius parameters determined here for the reactions of ozone with beta -pinene and limonene are the first to be reported.

Links and resources

Tags