Projects per year
The rates of ozonolysis of four sesquiterpenes, beta-caryophyllene, alpha-humulene, isolongifolene and alpha-cedrene, are determined in the gas phase at an elevated temperature of 366 +/- 3 K and a pressure of similar to 780 Torr using the EXTreme RAnge chamber (EXTRA). The experimentally obtained rate coefficients agree with extrapolated room temperature rate coefficients for isolongifolene and alpha-cedrene but not for beta-caryophyllene and alpha-humulene, which were found to be three orders of magnitude slower than this in the literature. These new measurements support the hypothesis that operating under ambient conditions, kinetic measurements of condensable species can be influenced adversely by heterogeneous processes and should therefore be treated with caution.
The gas phase atmospheric photolysis and reactions of key alkyl nitrates and their role in NOy partitioning.
1/10/09 → 1/04/13