Hygroscopicity of SOA from oxidation of cycloalkenes and terpenes
نویسندگان
چکیده
V. Varutbangkul, F. J. Brechtel, R. Bahreini, N. L. Ng, M. D. Keywood, J. H. Kroll, R. C. Flagan, J. H. Seinfeld, A. Lee, and A. H. Goldstein Department of Chemical Engineering, California Institute of Technology, Pasadena, California, USA Brechtel Manufacturing Inc., Hayward, California, USA Department of Environmental Science and Engineering, California Institute of Technology, Pasadena, California, USA National Oceanic and Atmospheric Administration (NOAA), Boulder, Colorado, USA Commonwealth Scientific and Industrial Research Organisation, Melbourne, Australia Department of Environmental Science, Policy and Management, University of California, Berkeley, California, USA
منابع مشابه
Hygroscopicity of secondary organic aerosols formed by oxidation of cycloalkenes, monoterpenes, sesquiterpenes, and related compounds
A series of experiments has been conducted in the Caltech indoor smog chamber facility to investigate the water uptake properties of aerosol formed by oxidation of various organic precursors. Secondary organic aerosol (SOA) from simple and substituted cycloalkenes (C5-C8) is produced in dark ozonolysis experiments in a dry chamber (RH∼5%). Biogenic SOA from monoterpenes, sesquiterpenes, and oxy...
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The Aerodyne aerosol mass spectrometer (AMS) was used to characterize physical and chemical properties of secondary organic aerosol (SOA) formed during ozonolysis of cycloalkenes and biogenic hydrocarbons and photo-oxidation of m-xylene. Comparison of mass and volume distributions from the AMS and differential mobility analyzers yielded estimates of "effective" density of the SOA in the range o...
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A substantial fraction of the total ultrafine particulate mass is comprised of organic compounds. Of this fraction, a significant subfraction is secondary organic aerosol (SOA), meaning that the compounds are a by-product of chemistry in the atmosphere. However, our understanding of the kinetics and mechanisms leading to and following SOA formation is in its infancy. We lack a clear description...
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