HR: 1340h
AN: A53A-0153    [Abstracts]
TI: Correlation of Oxygenated Organic Aerosol With Water Soluble Organic Carbon in Tokyo
AU: * Kondo, Y
EM: kondo@atmos.rcast.u-tokyo.ac.jp
AF: Reseech Center for Advanced Science Tecnology, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904 Japan
AU: Miyazaki, Y
EM: yuzom@atmos.rcast.u-tokyo.ac.jp
AF: Reseech Center for Advanced Science Tecnology, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904 Japan
AU: Takegawa, N
EM: takegawa@atmos.rcast.u-tokyo.ac.jp
AF: Reseech Center for Advanced Science Tecnology, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904 Japan
AU: Miyakawa, T
EM: miyakawa@atmos.rcast.u-tokyo.ac.jp
AF: Reseech Center for Advanced Science Tecnology, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904 Japan
AU: Fukuda, M
EM: fukuda@atmos.rcast.u-tokyo.ac.jp
AF: Reseech Center for Advanced Science Tecnology, University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904 Japan
AU: Weber, R
EM: rweber@eas.gatech.edu
AF: School of Earth and Atmospheric Sciences, Georgia Insutitute of Technology , 311 Ferst Dr., Atlanta, GA 30332-0340 United States
AU: Jimenez, J
EM: jose.jimenez@colorado.edu
AF: Department of Chemistry and CIRES, University of Colorado , UCB216, Boulder, CO 80309-0216 United States
AU: Zhang, Q
EM: zhangq@cires.colorado.edu
AF: Department of Chemistry and CIRES, University of Colorado , UCB216, Boulder, CO 80309-0216 United States
AU: Worsnop, D
EM: worsnop@aerodyne.com
AF: Aerodyne Reseach, Inc. , 45 Manning Rd, Billerica, MA 01821-3976 United States
AB: Submicron organic aerosol was measured by the Aerodyne Aerosol Mass Spectrometer (AMS) simultaneously with water soluble organic carbon (WSOC) collected by Particle-into-Liquid Sampler (PILS) in Tokyo in winter, summer, and fall 2004. This study presents the first intercomparison of AMS with WSOC measurements. Previous AMS studies have shown that signals at m/z 44 of the AMS mass spectra are dominated by COO+, which typically originates from oxygenated organic aerosols (OOA). The signals at m/z 44 and derived OOA were highly correlated with WSOC (r2 = 0.76-0.96) throughout these seasons. The slope of the m/z 44-WSOC correlation did not show significant seasonal variation. These results suggest that the chemical composition of organic aerosols classified as OOA is similar to those measured as WSOC.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0322 Constituent sources and sinks
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005