COLL 349 |
| Laboratory studies will be presented on the topic of heterogeneous aerosol oxidation. Much of the presentation will be on saturated organics, and their interactions with the hydroxyl radical. These experiments have been done in both aerosol and coated-wall flow tubes, using AMS, SMPS, ESI-MS and PTR-MS as analytical detection methods. Yields of gas-phase products, aerosol size change, and kinetics of radical uptake will be presented. With these results in mind, experiments where ambient aerosol is oxidized with OH will be discussed. Two other topics will be presented briefly, within the same general context of heterogeneous oxidation. These include the kinetics of interaction of ozone with soot surfaces, which will be compared to the kinetics of ozone interacting with all other unsaturated surfaces, and the products that arise in the interaction of the nitrate radical with soot surfaces. |
|
The Physical Chemistry of Environmental Interfaces
8:30 AM-12:40 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 225, Oral
Division of Colloid & Surface Chemistry |