J . Phys. Chem. 1989, 93, 2368-2374
2368
nonlinear least-squares kinetic treatment of the experimental absorption traces. The results are thus based on the knowledge of exact absorption cross sections of the peroxy radicals. A new terminating reaction route for the reaction between C H 3 C 0 0 2and CH3O2 radicals has been proposed: CH3C002
+ CH3O2
-
CH3COOH + H C H O
+02
(3b)
The results show that the reactions between C H 3 C 0 0 2and CH3O2 radicals produce organic acids. These reactions might be a source of organic acid formation (especially CH3COOH) in the remote
regions of the troposphere, where at lower NO concentrations (
