Communications Chemistry (Feb 2021)
Surprisingly long lifetime of methacrolein oxide, an isoprene derived Criegee intermediate, under humid conditions
Abstract
Methacrolein oxide is one of the ozonolysis products of isoprene present in our atmosphere, but its relevance under humid conditions is not fully understood. Here, UV-vis spectroscopy and reaction kinetics studies show much longer lifetimes of anti-methacrolein oxide than previously thought, suggesting much higher steady-state concentrations and higher impact on the oxidation of atmospheric SO2.