AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
Temperature-induced Variants in Secondary Organic Aerosol Formation from the Photo-oxidation of Fuel
TERRY LATHEM, Phillips 66
Abstract Number: 7 Working Group: Aerosol Chemistry
Abstract Increasingly stringent environmental regulations on particulate matter are requiring a more advanced understanding of the emission, formation, and evolution of atmospheric particles. Industry and regulators require a more detailed understanding of these particle sources and particle formation pathways to ensure efficient and cost-effective regulatory compliance. This presentation will discuss the current challenges and uncertainties in quantifying and measuring secondary particulate matter from fuel sources, with an emphasis on variants in particle formation resulting from changes in ambient temperature. Secondary organic aerosol (SOA) formation resulting from the atmospheric photo-oxidation of gasoline and aromatics will be presented from experiments conducted at the Phillips 66 Research Center. The data set includes two years of outdoor chamber experiments conducted at temperatures ranging from -10 to 40C and comparison to similar experiments conducted in an indoor temperature-controlled chamber within the same temperature range. It will be shown that both fuel composition and temperature can have significant influences on SOA formation potential. The impact of temperature variations on both the kinetics and magnitude of SOA formation from fuels and aromatics will also be discussed.