During my Ph.D. work at Georgia Tech I developed a method to measure water-soluble organic carbon (WSOC) aerosols in real-time both on the ground and when airborne. I also developed methods to chemically characterize WSOC using XAD-8 resin and size-exclusion chromatography. Both these techniques were then used to try to further understand the sources of WSOC.

Currently, in my post-doctoral research at Colorado State University I have been working with a new, inexpensive, and robust method to measure smoke marker compounds, such as levoglucosan, using high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). This approach offers numerous advantages over traditional methods, including extraction of the filter directly in water and the ability to directly analyze the filter extract for levoglucosan. One of the current applications of this method is on source samples collected at the Fire Science Laboratory in Missoula, MT. This work is being performed in order to generate much needed smoke source profiles that could be used to assess the contribution of wildfires and prescribed fires to the total organic carbon concentrations.

Asa-Awuku, A., A. Nenes, A.P. Sullivan, C.J. Hennigan, and R.J. Weber, Investigation of molar volume and surfactant characteristics of water-soluble organic compounds in biomass burning aerosol, Atmos. Chem. Phys., accepted, 2007.

Peltier, R.E., R.J. Weber, and A.P. Sullivan (2008). Investigating a Liquid-Based Method for Online Organic Carbon Detection in Atmospheric Particle, Aerosol Sci. Technol., accepted.

Brock, C.A., A.P. Sullivan, R.E. Peltier, R.J. Weber, A. Wollny, J.A. de Gouw, A.M. Middlebrook, E.L. Atlas, A. Stohl, M.K. Trainer, O.R. Cooper, F.C. Fehsenfeld, G.J. Frost, J.S. Holloway, G. Hübler, J.A. Neuman, T.B. Ryerson, C. Warneke, and J.C. Wilson (2008). Sources of Particulate Matter in the northeastern United States in Summer: 2. Evolution of Chemical and Microphysical Properties, J. Geophys. Res., 113, D08302, doi:10.1029/2007JD009241.

de Gouw, J.A., C.A. Brock, E.L. Atlas, T.S. Bates, F.C. Fehsenfeld, P.D. Goldan, J.S. Holloway, W.C. Kuster, B.M. Lerner, B.M. Matthew, A.M. Middlebrook, T.B. Onasch, R.E. Peltier, P.K. Quinn, C.J. Senff, A. Stohl, A.P. Sullivan, M. Trainer, C. Warneke, R.J. Weber, and E.J. Williams (2008). Sources of Particulate Matter in the northeastern United States in Summer: 1. Direct Emissions and Secondary Formation of Organic Matter in Urban Plumes, J. Geophys. Res., 113, D08301, doi:10.1029/2007JD009243.

Peltier, R.E., A.P. Sullivan, R. J. Weber, C.A. Brock, A.G. Wollny, J.S. Holloway, J.A. de Gouw, and C. Warneke (2007). Fine aerosol bulk composition measured on WP-3D research aircraft in vicinity of the Northeastern United States - results from NEAQS, Atmos. Chem. Phys., 7, 3231-324.

Weber, R.J., A.P. Sullivan, R.E. Peltier, A. Russell, B. Yan, M. Zheng, J. de Gouw, C. Warneke, C. Brock, J.S. Holloway, E.L. Atlas, and E. Edgerton (2007). A study of secondary organic aerosol formation in the anthropogenic-influenced southeastern United States, J. Geophys. Res., 112, D13302, doi:10.1029/2007JD008408.

Peltier, R.E., A.P. Sullivan, R.J. Weber, A.G. Wollny, J.S. Holloway, C.A. Brock, J.A. de Gouw, and E.L. Atlas (2007). No evidence for acid-catalyzed secondary organic aerosol formation in power plant plumes over metropolitan Atlanta, Georgia, Geophys. Res., Lett, 34, L06801, doi:10.1029/2006GL028780.

Greenwald, R., M.H. Bergin, R. Weber, and A. Sullivan (2007). Size-resolved, real-time measurement of water-insoluble aerosols in metropolitan Atlanta during the summer of 2004, Atmos. Environ., 41, 519-531.

Brown, S.S., T.B. Ryerson, A.G. Wollny, C.A. Brock, R. Peltier, A.P. Sullivan, R.J. Weber, W.P. Dubé, M. Trainer, J.F. Meagher, F.C. Fehsenfeld, and A.R. Ravishankara (2006). Variability in Nocturnal Nitrogen Oxide Processing and Its Role in Regional Air Quality, Science, 311, 67-70.

Nowak, J.B., L.G. Huey, A.G. Russell, D. Tian, J.A. Neuman, D. Orsini, S.J. Sjostedt, A.P. Sullivan, D.J. Tanner, R.J. Weber, A. Nenes, E. Edgerton, and F.C. Fehsenfeld (2006). Analysis of urban gas phase ammonia measurements from the 2002 Atlanta Aerosol Nucleation and Real-Time Characterization Experiment (ANARChE), J. Geophys. Res., 111, doi:10.1029/2006JD007113.

Heald, C.L., D.J. Jacob, S. Turquety, R.C. Hudman, R.J. Weber, A.P. Sullivan, R.E. Peltier, E.L. Atlas, J.A. de Gouw, C. Warneke, J.S. Holloway, J.A. Neuman, F.M. Flocke, and J.H. Seinfeld (2006). Concentrations and sources of organic carbon aerosols in the free troposphere over North America, J. Geophys. Res., 111, D23S47, doi:10.1029/2006JD007705.

Sannigrahi, P., A.P. Sullivan, R.J. Weber, and E.D. Ingall (2006). Characterization of water-soluble organic carbon in urban atmospheric aerosols using 13C NMR spectroscopy, Environ. Sci. Technol., 40, 666-672.

Sullivan, A.P., R.E. Peltier, C.A. Brock, J.A. de Gouw, J.S. Holloway, C. Warneke, A.G. Wollny, and R.J. Weber (2006). Airborne measurements of carbonaceous aerosol soluble in water over northeastern United States: Method development and an investigation into water-soluble organic carbon sources, J. Geophys. Res., 111, D23S46, doi:10.1029/2006JD007072.

Sullivan, A.P. and R.J. Weber (2006). Chemical characterization of the ambient organic aerosol soluble in water: 1. Isolation of hydrophobic and hydrophilic fractions with a XAD-8 resin, J. Geophys. Res., 111, D05314, doi:10.1029/2005JD006485.

Sullivan, A.P. and R.J. Weber (2006). Chemical characterization of the ambient organic aerosol soluble in water: 2. Isolation of acid, neutral, and basic fractions by modified size-exclusion chromatography, J. Geophys. Res., 111, D05315, doi:10.1029/2005JD006486.

Murphy, D.M., D.J. Cziczo, K.D. Froyd, P.K. Hudson, B.M. Matthew, A.M. Middlebrook, R.E. Peltier, A. Sullivan, D.S. Thomson, and R.J. Weber (2006). Single-particle mass spectroscopy of tropospheric aerosol particles, J. Geophys. Res., 111, D23S32, doi:10.1029/2006JD00734.

Chen, G., L.G. Huey, M. Trainer, D. Nicks, J. Corbett, T. Ryerson, D. Parrish, J.A. Neuman, J. Nowak, D. Tanner, J. Holloway, C. Brock, J. Crawford, J.R. Olson, A. Sullivan, R. Weber, S. Schauffler, S. Donnelly, E. Atlas, J. Roberts, F. Flocke, G. Hübler, and F. Fehsenfeld (2005). An investigation of the chemistry of ship emission plumes during ITCT 2002, J. Geophys. Res., 110, D10S90, doi:10.1029/2004JD005236.

Brock, C.A., P.K. Hudson, E.R. Lovejoy, A. Sullivan, J.B. Nowak, L.G. Huey, O.R. Copper, D.J. Cziczo, J. de Gouw, F.C. Fehsenfeld, J.S. Holloway, G. Hübler, B.G. LaFleur, D.M. Murphy, J.A. Neuman, D.K. Nicks, Jr., D.A. Orsini, D.D. Parrish, T.B. Ryerson, D.J. Tanner, C. Warneke, R.J. Weber, and J.C. Wilson (2004). Particle characteristics following cloud-modified transport from Asia to North America, J. Geophys. Res., 109, D23S26, doi:10.1029/2003JD004198.

Millet, D.B., A.H. Goldstein, J. Allan, T.S. Bates, H. Boudries, K.N. Bower, H. Coe, Y. Ma, M. McKay, P.K. Quinn, A. Sullivan, R.J. Weber, and D.R. Worsnop (2004). VOC measurements at Trinidad Head, CA during ITCT 2K2: Analysis of sources, atmospheric composition and aerosol residence times, J. Geophys. Res., 109, D23S16, doi:10.1029/2003JD004026.

Sullivan, A.P., R.J. Weber, A.L. Clements, J.R. Turner, M.S. Bae, and J.J. Schauer (2004). A method for on-line measurement of water-soluble organic carbon in ambient aerosol particles: Recent results from an urban site, Geophys. Res. Lett., 31, L13105, doi:10.1029/2004GL019681.

Neuman, J.A., J.B. Nowak, C.A. Brock, M. Trainer, F.C. Fehsenfeld, J.S. Holloway, G. Hübler, P.K. Hudson, D.M. Murphy, D.K. Nicks, Jr., D. Orsini, D.D. Parrish, T.B. Ryerson, D.T. Sueper, A. Sullivan, and R. Weber (2003). Variability in ammonium nitrate formation and nitric acid depletion with altitude and location over California, J. Geophys. Res., 108(D17), 4557, doi:10.1029/2003JD003616.

Orsini, D., Y. Ma, A. Sullivan, B. Sierau, K. Baumann, and R. Weber (2003). Refinements to the Particle-into-Liquid Sampler (PILS) for Ground and Airborne Measurements of Water-Soluble Aerosol Composition, Atmos. Environ., 37, 1243-1259.

Sullivan, A.P., A.S. Holden, L. Patterson, L.R. Mazzoleni, S.M. Kreidenweis, J.L. Collett, Jr., W.C. Malm, W.M. Hao, and C.E. Wold (2008). A Method for Smoke Marker Measurements for Determining the Contribution of Biomass Burning to Ambient PM2.5 Organic Carbon, Presentation AWMA Specialty Conference.

Sullivan, A.P., A.S. Holden, L. Patterson, L.R. Mazzoleni, S.M. Kreidenweis, J.L. Collett, Jr., W.C. Malm, W.M. Hao, and C.E. Wold (2007). A Method for Smoke Marker Measurements for Determining Air Quality Impacts of Biomass Burning, Presentation Fall AAAR Meeting.

Sullivan, A.P. and R.J. Weber (2005). Sources of Organic Aerosols Soluble in Water in the Southeastern U.S., Presentation Fall AGU Meeting.

Sullivan, A.P. and R.J. Weber (2005). A Method to Isolate Carbonaceous Aerosols Soluble in Water by Organic Functional Group Using Solid Phase Extraction and Size-Exclusion Chromatography, Presentation Fall AAAR Meeting.

Sullivan, A.P. and R.J. Weber (2005). Chemical Characterization of Fine Particle Water-Soluble Organic Carbon Using Solid Phase Extraction and Size-Exclusion Chromatography, Poster Atmospheric Chemistry Gordon Research Conference.

Sullivan, A.P. (2005). Isolation and Characterization of Fine Particle Carbonaceous Aerosols Soluble in Water Using Solid Phase Extraction and Size-Exclusion Chromatography, Presentation ACCESS VIII.

Sullivan, A.P. and R.J. Weber (2005). Investigation of the Physical Properties of Fine Particle Water-Soluble Organic Carbon Aerosols, Presentation Fall AAAR Meeting.

Sullivan, A.P., R.E. Peltier, R.J. Weber, C.A. Brock, J.A. de Gouw, J.S. Holloway, C. Warneke, and A.G. Wollny (2005). A Method for Airborne Measurements of Water-Soluble Organic Carbon: PILS-TOC results from the NOAA WP-3D during ICARTT, Presentation Fall AAAR Meeting.

Sullivan, A., R. Weber, P. Sannigrahi, E. Ingall, B. Yan, L. Ke, B. Wang, M. Zheng, A. Clements, J.R. Turner, M. Bae, and J.J. Schauer (2004). Investigation into the hydrophilic versus hydrophobic fraction of ambient PM2.5 organic particles soluble in water, Poster Fall AGU Meeting.

Sullivan, A., R. Weber, P. Sannigrahi, E. Ingall, B. Yan, L. Ke, B. Wang, M. Zheng, A. Clements, J.R. Turner, M. Bae, and J.J. Schauer (2004). Measurement of ambient WSOC compounds using a PILS coupled to a Total Organic Carbon analyzer and XAD-8 column, Presentation Fall AAAR Meeting.

Sullivan, A., R. Weber, A. Clements, J. Turner, M. Bae, and J. Schauer (2003). Water-soluble organic carbon and organic and elemental carbon in St. Louis using near real-time aerosol monitors, Poster Fall AAAR Meeting.

Sullivan, A., D. Orsini, R. Weber, C. Brock, O. Cooper, J. Holloway, Y. Tang, and G. Carmichael (2002). Measurements of Fine Particle Chemical Composition as Part of the ITCT 2K2 Experiment, Presentation Fall AGU Meeting.