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Formation And Stability Of Atmospherically Relevant Isoprene-Derived Organosulfates And Organonitrates, Adam I. Darer, Neil C. Cole-Filipiak, Alison E. O'Connor, Matthew J. Elrod Mar 2011

Formation And Stability Of Atmospherically Relevant Isoprene-Derived Organosulfates And Organonitrates, Adam I. Darer, Neil C. Cole-Filipiak, Alison E. O'Connor, Matthew J. Elrod

Faculty & Staff Scholarship

Isoprene is the precursor for number of alcohol, organosulfate, and organonitrate species observed in ambient secondary organic aerosol (SOA). Recent laboratory and field work has suggested that isoprene-derived epoxides may be crucial intermediates that can explain the existence of these compounds in SOA. To confirm this hypothesis, the specific hydroxy epoxides observed in gas phase isoprene photooxidation experiments (as well as several other related species) were synthesized and the bulk phase aqueous reactions of these species in the presence of sulfate and nitrate were studied via nuclear magnetic resonance (NMR) techniques. The results indicate that both primary and tertiary organosulfates …