A. Aranda et al., THE BRO- KINETICS AND ROLE IN THE ATMOSPHERIC OZONE BUDGET(CH3O2 REACTION ), Geophysical research letters, 24(22), 1997, pp. 2745-2748
Using the discharge flow method with detection of species by mass spec
trometry and laser-induced fluorescence, the kinetics of the reaction
BrO + CH3O2 --> products has been studied at 298 K. The rate constant
obtained is (5.7 +/- 0.6) x 10(-12) cm(3) molecule(-1) s(-1). The mech
anism of the reaction has been also investigated. These laboratory dat
a are used to discuss the possible impact of this reaction on the ozon
e budget in different parts of the atmosphere. The reaction is likely
to be negligible in the stratosphere, but is potentially significant i
n the remote marine boundary layer. The BrO + CH3O2 reaction, together
with other BrO + RO2 reactions, may also significantly contribute to
the ozone loss events observed in the Arctic troposphere in spring.