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EPA GAS PHASE CHEMISTRY CHAMBER STUDIES
Citation:
Luecken, D J. AND T. E. Kleindienst. EPA GAS PHASE CHEMISTRY CHAMBER STUDIES. Presented at US/German Ozone/Fine Particulate Science and Environmental Chamber Workshop, Riverside, CA, October 4-7, 1999.
Description:
Gas-phase smog chamber experiments are being performed at EPA in order to evaluate a number of current chemical mechanisms for inclusion in EPA regulatory and research models. The smog chambers are 9000 L in volume and constructed of 2-mil teflon film. One of the chambers is constructed so that it can be rolled outside to conduct experiments in natural sunlight. The chambers are irradiated by a system of 122 cm fluorescent bulbs, designed to match, to the extent possible, the distribution of solar radiation between 300 and 400 rim. Previous experiments have concentrated on single compounds, while current experiments focus on complex mixtures of straight-chain and branched hydrocarbons. The experiments have been designed for evaluating and comparing chemical mechanisms, as well as for improving the treatment of uncertain reactions in current mechanisms. Future plans include using enhanced analysis techniques to more completely characterize NOy and product formation.
This work has been funded in part by the United States Environmental Protection Agency under 68D50059 with Man Tech Environmental Technology, Inc. It has been subjected to Agency review and approved for clearance.