Identifier

etd-07112005-221802

Degree

Master of Science (MS)

Department

Environmental Sciences

Document Type

Thesis

Abstract

The EPA has classified Baton Rouge as a non-attainment area for ozone pollution for many years. Since then Photochemical Assessment Monitoring Stations (PAMS) and other ozone monitoring stations around the metropolitan area have monitored for ozone, NOx, and more than 50 volatile organic compounds (VOCs) which are considered precursors to ozone pollution. Traditionally, automobile engines and industrial plants and refineries have been blamed as major point sources for VOC emissions and the ozone pollution they cause. This research focuses on another possible point source for failing ozone levels at one of the ozone monitoring stations located on the campus of Louisiana State University. Gas Chromatograph and Mass Spectrometer analyses of newly poured asphalt surfaces near the monitoring station revealed a silicone “marker” compound that can be used to trace highly reactive VOCs that react almost instantly when exposed to sunlight. This marker and several species of alkenes boil out of new asphalt when heated to construction temperatures and in harsh environmental conditions. Enough of these chemicals are released to perhaps significantly effect the production of ozone in the lower atmosphere.

Date

2005

Document Availability at the Time of Submission

Release the entire work immediately for access worldwide.

Committee Chair

Edward B. Overton

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