5PC4 EFFECT OF NH3 ON PM2.5 COMPOSITION, KENNETH OLSZYNA, Solomon Bairai, Roger Tanner, Tennessee Valley Authority, Muscle Shoals, AL.

5PC5 UNCERTAINTY ANALYSIS OF THE MEASURED PM 2.5 CONCENTRATIONS, SUN-KYOUNG PARK, Armistead G. Russell, The Georgia Institute of Technology, Atlanta, GA.

5PC6 COMPARISON OF SEARCH AND EPA PM2.5 SPECIATION MONITOR DATA FOR SOURCE PREDICTION CALCULATIONS, DAVYDA HAMMOND, University of Alabama at Birmingham, Birmingham, AL; Ashley Williamson, Southern Research Institute, Birmingham, AL.

5PC7 COMPARISON OF OBSERVED AND CMAQ SIMULATED ATMOSPHERIC CONSTITUENTS BY FACTOR ANALYSIS, Wei Liu , Yuhang Wang, Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA; Amit Marmur, Armistead Russell, Georgia Institute of Technology, Civil and Environmental Engineering, Atlanta, GA; Eric S. Edgerton, Atmospheric Research and Analysis, Inc., Durham, NC..

6:00 PM – 8:00 PM

5PD. Carbonaceous Aerosols II

5PD1 CORRELATION OF EGA THERMOGRAPHIC PATTERNS AND OC/BC SOURCE REGIONS, DARREL BAUMGARDNER Graciela B. Raga Oscar Peralta.

5PD2 UNDERSTANDING THE ORIGIN OF ORGANIC ACIDS PRESENT IN SECONDARY ORGANIC AEROSOL FROM A REMOTE SAMPLING SITE IN NORTHERN MICHIGAN, REBECCA SHEESLEY, James Schauer, University of Wisconsin-Madison, Environmental Chemistry and Technology Program, Madison, WI; Donna Kenski, Lake Michigan Air Directors Consortium, Des Plaines, IL; Erin Bean, University of Wisconsin-Madison, State Lab of Hygiene, Madison, WI..

5PD3 EVALUATION OF ORGANIC TRACER ANALYSIS IN AEROSOL, BO WANG, Meiyu Dong, Georgia Institute of Technology, Atlanta, GA; James Schauer, University of Wisconsin-Madison, Madison, WI; Mei Zheng, Georgia Institute of Technology, Atlanta, GA.

5PD4 SPATIAL CHARACTERIZATION OF PM2.5 ASSOCIATED ORGANIC COMPOUNDS IN THE SAN JOAQUIN VALLEY, LYNN R. RINEHART, Dave Campbell, Eric Fujita, Judith C. Chow, and Barbara Zielinska, Desert Research Institute, Division of Atmospheric Science, Reno, NV 89512.

5PD5 ANNUAL VARIATION OF ENVIRONMENTAL AEROSOL CONCENTRATION: A COMPARATIVE STUDY OF THREE YEARS, T. S. VERMA, T. A. Thomas, Department of Physics, University of Botswana, P/Bag 0022, Gaborone, Botswana.

5PD6 CORRELATIONS BETWEEN BIOGENIC VOLATILE ORGANIC COMPOUNDS, ANTHROPOGENIC POLLUTANTS, AND AEROSOL FORMATION IN A SIERRA NEVADA PINE FOREST, MELISSA LUNDEN, Douglas Black, Nancy Brown, Atmospheric Science Department, Lawrence Berkeley National Laboratory, Berkeley, CA; Anita Lee, Gunnar Schade and Allen Goldstein, Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA.

5PD7 URBAN / RURAL CONTRAST FOR AMBIENT FINE PARTICULATE MATTER IN THE ST. LOUIS AREA, Neil D. Deardorff, JAY R. TURNER, Washington University, St. Louis, MO; Min-Suk Bae, James J. Schauer, University of Wisconsin, Madison, WI; Warren W. White, University of Calfornia, Davis, CA.

5PD8 WATER- SOLUBLE FRACTION OF ORGANIC CARBON, CRUSTAL ELEMENTS, AND POLYATOMIC IONS IN ASIAN AEROSOLS, RACHELLE DUVALL, Martin Shafer, James Schauer, University of Wisconsin-Madison, Madison, WI; Patrick Chuang, University of California at Santa Cruz, Santa Cruz, CA; Berndt Simoneit, Oregon State University, Corvallis, OR.

5PD9 SHORT-TIME PERIODIC VARIATIONS OF AEROSOL CONCENTRATION AND BASE METEOPARAMETERS IN THE SURFACE LAYER, ANDREI JOURAVEV, Guerman Teptin, Kazan State University, Russia.

6:00 PM – 8:00 PM

5PE. Chemical Characterization of Atmospheric Aerosols 1

5PE1 PM10 AEROSOLS OF URBAN COIMBATORE, INDIA WITH EMPHASIS ON ITS ELEMENTAL, IONIC AND PAH CONSTITUENTS, R. MOHANRAJ, P. A. Azeez. Salim Ali Centre. India..

5PE2 SEASONAL AND SPATIAL VARIABILITY OF THE SIZE-RESOLVED CHEMICAL COMPOSITION OF PARTICULATE MATTER (PM10) IN THE LOS ANGELES BASIN, SATYA B. SARDAR, Philip M. Fine, and Constantinos Sioutas, University of Southern California, Los Angeles, CA.

5PE3 SIZE-SEGREGATED CHEMICAL PARTICLE CHARACTERIZATION IN WINTER 2003 AT THE IFT-RESEARCH STATION MELPITZ (GERMANY), GERALD SPINDLER, Erika Brüggemann, Thomas Gnauk, Achim Grüner, Hartmut Herrmann, Konrad Müller, Leibniz-Institut für Troposphärenforschung e.V., Leipzig, Germany; Horst Werner, Umweltbundesamt, Berlin, Germany.

5PE4 MEASUREMENTS OF AMBIENT AEROSOL COMPOSITION USING AN AERODYNE AEROSOL MASS SPECTROMETER IN NEW YORK CITY: WINTER 2004 INTENSIVE STUDY, SILKE WEIMER, James J. Schwab, Kenneth L. Demerjian, Atmospheric Sciences Research Center, State University of New York, Albany, NY; Frank Drewnick, Department Cloud Physics and Chemistry, Max Planck Institute of Chemistry, Mainz, Germany; Doug Worsnop, Aerodyne Research, Inc., Billerica, MA; Jose L. Jimenez, Qi Zhang, University of Colorado, Boulder, CO.

5PE5 ELEMENTAL COMPOSITION OF PM10 AND PM2.5 FROM RESUSPENDED SOIL IN CALIFORNIAS' SAN JOAQUIN VALLEY, OMAR F. CARVACHO,Lowell L. Ashbaugh, Michael S. Brown, and Robert G. Flocchini, University of