ARB Research Seminar

This page updated June 19, 2013

Atmospheric Chemistry of Selected Linear, Branched and Cyclic C10 Alkane Components of Mineral Spirits

Photo of Roger Atkinson, Ph.D.

Roger Atkinson, Ph.D., Department of Environmental Sciences and Department of Chemistry, University of California, Riverside

August 09, 2002
Cal EPA Headquarters, 1001 "I" Street, Sacramento, CA

Presentation
Research Project

Overview

Alkanes are significant components of gasoline and diesel fuels and of vehicle exhaust, and alkanes containing 9-13 carbon atoms are important constituents of mineral spirits. In the atmosphere, alkanes react with the hydroxyl (OH) radical to form a suite of products, certain of which are presently difficult to identify and quantify. The formation of organic nitrates from the OH radical-initiated reactions of alkanes in the presence of NOₓ affects ozone formation, because NO₂ which would otherwise be photolyzed to form O₃ is sequestered in the organic nitrates. Hence, accurate measurements of the amounts of organic nitrates formed, including hydroxyalkyl nitrates, is critical to predictions of ozone formation from alkane photooxidations. We investigated the products of the gas-phase reactions of OH radicals with the n-alkanes n-pentane through n-octane and investigated the kinetics and products of the OH radical reactions of three representative linear, branched and cyclic C10 alkanes, n-decane, 3,4-diethylhexane and n-butylcyclohexane.

Speaker Biography

Roger Atkinson is a Research Chemist at the Air Pollution Research Center and a Professor in the Department of Environmental Sciences and the Department of Chemistry at UC Riverside. He is the author or co-author of over 300 technical publications dealing with the atmospheric chemistry of volatile organic compounds.


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