Aerosol Chemistry

Absorption Spectra and Brown Carbon Chromophores in Particles Emitted by Burning Structural Materials. LUIS RUIZ ARMENTA, Katherine Hopstock, Qiaorong Xie, Kevin Ridgway, Jamie Cast, Shantanu Jathar, Christian L'Orange, Alexander Laskin, Sergey Nizkorodov, University of California, Irvine

Acyclic Monoterpenes Do Not Suppress Secondary Organic Aerosol Formed via Photooxidation of Cyclic Monoterpenes. SIJIA LIU, Celia Faiola, Sergey Nizkorodov, University of California, Irvine

Aerosol Organic and Inorganic Composition on Sunny and Cloudy Days during EPCAPE. SANGHEE HAN, Abigail Williams, Veronica Berta, Jeramy Dedrick, Christian Pelayo, Nattamon (Jeep) Maneenoi, Lynn Russell, University of California, San Diego

Amore 2.0: A New and Improved Algorithm for the Reduction of Atmospheric Oxidation Mechanisms. FORWOOD WISER, V. Faye McNeill, Siddhartha Sen, Daniel Westervelt, Benjamin Yang, Arlene Fiore, Daven Henze, Arijit Chakraborty, Columbia University

Aqueous Phase Photochemical Transformations of Phenolic SOA: Effects of Organic Concentration and Ionic Strength on SOA Chemistry. CHRISTOPHER NIEDEK, Wenqing Jiang, Yuejun Zhou, Lan Ma, Cort Anastasio, Qi Zhang, University of California, Davis

Assessing the Effects of Wet Deposition: Observing Removal Timescales for Gases and Aerosols in Semi-Urban and Remote Areas. CHRISTOS STAMATIS, Chenyang Bi, Gabriel Isaacman-VanWertz, Virginia Tech

Assessing the Impact of Atmospheric Photochemical Aging on Organic Aerosol Tracers Derived From Burning African Biomass Relevant to Botswana. ADRIENNE LAMBERT, Cade Christensen, Vaios Moschos, Megan Mouton, MarkieSha James, Marc Fiddler, Barbara Turpin, Solomon Bililign, Jason Surratt, University of North Carolina at Chapel Hill

Atmospheric Nucleation Potential of Complex Mixtures. COTY JEN, Jack Johnson, Carnegie Mellon University

Biogenic New Particle Formation in the Presence of SO2 and Ammonia. VIGNESH VASUDEVAN GEETHA, Lee Tiszenkel, Shanhu Lee, The University of Alabama in Huntsville

Brake Wear Emissions of Gas-Phase Sulfuric Acid, Inorganic Nitrogen Species and Oxidized Organics. MICHELIA DAM, Adam Thomas, Véronique Perraud, Lisa Wingen, Barbara Finlayson-Pitts, James Smith, University of California, Irvine

Brown Carbon Formation by Aqueous Phase Reactions of Glycolaldehyde and Methylamine. Camille Carthy, Erin O'Leary, Swetha Tadisina, Daniel Griffith, Heidi Hendrickson, Joseph Woo, MELISSA GALLOWAY, Lafayette College

Characterization of Chemical Aerosols Generated Using Commercially Available Liquid Aerosol Generators. OYEDOYIN ADUROJA, Kalia Robinson, Cathy S. Scotto, Vasanthi Sivaprakasam, US Naval Research Laboratory

Characterization of Ultrafine Particle Formation from Non-Tailpipe Vehicular Emissions. MADELINE COOKE, Adam Thomas, Michelia Dam, Véronique Perraud, Lisa Wingen, Barbara Finlayson-Pitts, James Smith, University of California, Irvine

Characterizing the Rate of Water Diffusion in Viscous Particles and Gels Containing Organic and Inorganic Material. CRAIG SHELDON, James F. Davies, University of California, Riverside

Chemical and Meteorological Controls on New Particle Formation in the Southern Great Plains. BRI DOBSON, Harald Stark, Daniel Katz, Jordan Krechmer, Chongai Kuang, Manjula Canagaratna, Douglas Worsnop, Eleanor Browne, University of Colorado Boulder & CIRES

Chemical Composition of Secondary Organic Aerosol Formed from the Oxidation of Isoprene-Derived C5H10O3 Reactive Uptake Products. MOLLY FRAUENHEIM, Jason Surratt, Zhenfa Zhang, Avram Gold, University of North Carolina at Chapel Hill

Chemical Identification of New Particle Formation and Growth Precursors through Positive Matrix Factorization of Ambient Ion Measurements. DANIEL KATZ, Aroob Abdelhamid, Harald Stark, Manjula Canagaratna, Douglas Worsnop, Eleanor Browne, University of Colorado Boulder & CIRES

Classification of Novel Chemical Markers in Secondary Organic Aerosol Formation through Incorporation of Laboratory and Ambient “Unknown” Species into an Open-Access Mass Spectral Database (UCB-GLOBES). LINDSAY YEE, Emily Franklin, Robert Weber, Taekyu Joo, Masayuki Takeuchi, Gamze Eris, Weiqi Xu, Nga Lee Ng, Yuzhi Chen, John Shilling, Allen Goldstein, University of California, Berkeley

Comparison of Common Vapor Pressure Estimation Methods and the Effect of Viscosity on SOA Formation through Modeling of Alkene OH/NOx Systems. EMMALINE LONGNECKER, Julia Bakker-Arkema, Zhe Peng, Paul Ziemann, University of Colorado Boulder

Comparisons of Aqueous SOA Products and Physical Properties in Methylglyoxal/Ammonium-Sulfate Solutions under Dark and Irradiated Conditions. ERIN O'LEARY, Maia Merriman, Katherine Pierre-Louis, Bruno Loyola San Martin, Joseph Woo, Lafayette College

Composition and Atmospheric Transformations of Organic Aerosol Emitted From Biomass and Urban Material Burning. KATHERINE HOPSTOCK, Alexandra Klodt, Michael Alvarado, Qiaorong Xie, Hind Al-Abadleh, Alexander Laskin, Sergey Nizkorodov, University of California, Irvine

Constraining RO2 Fate in Environmental Chambers: A Systematic, Model-Informed Approach for Laboratory Studies of SOA Formation. HANNAH KENAGY, Matthew Goss, Nadia Tahsini, Colette L. Heald, Jesse Kroll, Massachusetts Institute of Technology

Conversion of Organic Sulfur from Hydroxymethanesulfonate (HMS) to Inorganic Sulfur Species upon Heterogeneous OH Oxidation. Donger Lai, Yee Ka Wong, Rongshuang Xu, Sinan Xing, Sze In Madeleine Ng, Lin Kong, Jian Zhen Yu, Dan Dan Huang, MAN NIN CHAN, The Chinese University of Hong Kong

Decreases in Epoxide-Driven Secondary Organic Aerosol Production under Highly Acidic Conditions: The Importance of Acid-Base Equilibria. Madeline Cooke, N. Cazimir Armstrong, Alison Fankhauser, Yuzhi Chen, Ziying Lei, Yue Zhang, Isabel Ledsky, Barbara Turpin, Zhenfa Zhang, Avram Gold, V. Faye McNeill, Jason Surratt, ANDREW AULT, University of Michigan

Deep Convective Cloud Formation: Characterization of Secondary Organic Aerosols during TRACER-ARM Campaign. TANIA GAUTAM, Gregory W. Vandergrift, Nurun Nahar Lata, Zezhen Cheng, Darielle Dexheimer, Swarup China, Pacific Northwest National Laboratory

Detection of Sulfuric Acid - Dimethyl Amine Nucleation Process using Ambient Pressure Proton Transfer Reaction Mass Spectrometry (AP-PTRMS). JUN ZHENG, Nanjing University of Information Science and Technology

Determination of Intermediates of the UO2F2 Aerosol Formation under Different Water Conditions. CHRISTIAN MARK SALVADOR, Jason Richards, Shannon Mahurin, Meng-Dawn Cheng, Oak Ridge National Laboratory

Determining the Controls on Buffering Capacity and pH Evolution of Inorganic Aqueous Droplets Using Aerosol Optical Tweezers. GRAHAM THORNHILL, Hallie Boyer Chelmo, Luke Monroe, Yucheng Zhang, Ryan Sullivan, Carnegie Mellon University

Development of a Chemical Sense Aerosol Testing Capability. Will Sellors, GEORGE SPENCE, Sarah Marchant, Peter Jones, Dstl, Porton Down, Salisbury, Wiltshire, SP4 0JQ, UK

Diurnal Trend and Interconnections of Organic Aerosols and Volatile Chemical Products (VCPs) in a Residential Area. KYLE MCCARY, Sining Niu, Alana Dodero, Yeaseul Kim, Sahir Gagan, Timothy Onasch, Karsten Baumann, Raghu Betha, Qi Ying, Yue Zhang, Texas A&M University

Dynamics at the Air-Water Interface Determine the Ozonolysis Kinetics of Anions in Single Microdroplets. ALEXANDER PROPHET, Kevin R. Wilson, Lawrence Berkeley National Laboratory

Effects of Relative Humidity on Secondary Organic Aerosol and Brown Carbon Formation from Nighttime Oxidation of Furan and Pyrrole. KUNPENG CHEN, Caitlin Hamilton, Bradley Ries, Michael Lum, Raphael Mayorga, Linhui Tian, Roya Bahreini, Haofei Zhang, Ying-Hsuan Lin, University of California, Riverside

Effects of Volatility, Viscosity, and Non-ideality on Particle-Particle Mixing Timescales of SOA. MEREDITH SCHERVISH, Manabu Shiraiwa, University of California, Irvine

Evaluation of Regional-Scale Model Parameters in the Prediction of Isoprene Epoxydiol (IEPOX)-Derived Secondary Organic Aerosols (SOA) Generated during Laboratory Chamber Experiments. ALEXANDRA NG, Yuzhi Chen, Jaime Green, Jason Surratt, Haofei Zhang, William Vizuete, University of North Carolina at Chapel Hill

Evidence of Photoacidic Characteristics by Nitrophenols in Organic Matrices. AVERY DALTON, Dmitry Fishman, Sergey Nizkorodov, University of California, Irvine

Evolution of Secondary Organic Aerosol Composition during Photochemical Ageing. OLGA GARMASH, Ben H. Lee, Maria Zawadowicz, John Shilling, Joel A. Thornton, University of Washington

Exploring Nighttime Uptake of HONO and Nitrite Oxidation on Coarse Mode Aqueous Aerosol Particles Utilizing the Aerosol Optical Tweezers. Luke Monroe, Jack Hall, Graham Thornhill, RYAN SULLIVAN, Carnegie Mellon University

Exploring the Hygroscopic Growth, Phase and Chemistry of Light-Absorbing Aerosol using Single Particle Levitation. JAMES F. DAVIES, Roya Bahreini, Malsha Amugoda, Prakriti Singh, Stephanie Salas, Erin Bowey, University of California, Riverside

Exploring the Phase Behavior of Biomass Burning Aerosols. NEALAN GERREBOS, F.K.A. Gregson, Julia Zaks, Allan K. Bertram, University of British Columbia

Exploring the Role of Hydroperoxyl Radical in the Multiphase Organic Aerosol Aging. WEN ZHANG, Haofei Zhang, University of California, Riverside

Formation and Properties of Secondary Organic Aerosol from Gas-Phase and Aqueous-Phase Oxidation of Guaiacyl Acetone. CLAIRE MOFFETT, Gregory W. Vandergrift, Zezhen Cheng, Jie Zhang, Swarup China, ManishKumar Shrivastava, Alla Zelenyuk, Pacific Northwest National Laboratory

Formation Kinetics of Isoprene Epoxydiol-Derived Secondary Organic Aerosol Are Altered Near the Sulfate/Bisulfate pKa. N. CAZIMIR ARMSTRONG, Madeline Cooke, Yuzhi Chen, Molly Frauenheim, Zhenfa Zhang, Avram Gold, Andrew Ault, Jason Surratt, University of North Carolina at Chapel Hill

Gas-Phase Oxidation Products and SOA Yields from a-Pinene Oxidation under a Range of RO2 Reaction Conditions. LESLY FRANCO DELOYA, Erik Helstrom, Hannah Kenagy, Yaowei Li, Frank Keutsch, Jesse Kroll, MIT

Heterogeneous Reaction of Protein Samples with Ambient Urban Air: Ratio of Nitration and Oligomerization Products. Rachel L. Davey, Alyssa Knaus, Paola Gascot, ALEKSANDRA VOLKOVA, Erick Mattson, J. Alex Huffman, University of Denver

HPALD2 is a Peroxyhemiacetal and a Source of SOA. REBECCA RICE, Jason Surratt, Zhenfa Zhang, Avram Gold, University of North Carolina at Chapel Hill

Identifying and Quantifying Products Formed from the Reaction of Alkenoic Acids with OH Radicals in a Low NOx Environment. ANNA ZIOLA, Paul Ziemann, University of Colorado Boulder

Impact of Acidic Aerosol on Deceleration of SOA Formation from the Photooxidation of Phenol or Benzene. Jiwon Choi, MYOSEON JANG, University of Florida

Impacts of Aging and Relative Humidity on Physical Properties of Wildfire Smoke. Liora Mael, SOFIE SCHWINK, Thomas Dunnington, Nicholas Gotlib, Marina Vance, University of Colorado Boulder

Implications of RO2 Fate for α-Pinene SOA Volatility and Composition. ERIK HELSTROM, Lesly Franco Deloya, Hannah Kenagy, Manjula Canagaratna, Jesse Kroll, MIT

Insights about the Sources of Organic Aerosol from Measurements of Organic Tracer Compounds in an Eastern Mediterranean Forested Site. Agata Kołodziejczyk, Kacper Błaziak, ANGELIKI MATRALI, Christina N. Vasilakopoulou, Ksakousti Skylakou, Spyros Ν. Pandis, University of Patras, Greece

Interactions of Anthropogenic and Biogenic Pollutants: Overview of the Spruce 2022 Campaign. ANGELIKI MATRALI, Christina N. Vasilakopoulou, Kalliopi Florou, Andreas Aktypis, Agata Kołodziejczyk, Christos Kaltsonoudis, Evangelia Kostenidou, Kacper Błaziak, Dontavious Sippial, Spyros Ν. Pandis, University of Patras, Greece

Investigate the Vertical Profile of Size-Resolved Aerosol Chemical Composition and Aerosol Mixing State during TRacking Aerosol Convection Interactions ExpeRiment (TRACER). ZEZHEN CHENG, Nurun Nahar Lata, Darielle Dexheimer, Matthew A. Marcus, Gregory W. Vandergrift, Tania Gautam, Chongai Kuang, Allison Steiner, Swarup China, Pacific Northwest National Laboratory

Investigating Effects of Biomass Burning Cross Plume Gradients and Plume Concentration on Photochemistry, Secondary Aerosol Formation, and Coagulation. NICOLE JUNE, Archana Dayalu, Marikate Mountain, Matthew Alvarado, Jeffrey R. Pierce, Colorado State University

Investigating Influence of Particle Size on Viscosity. SUNANDAN MAHANT, Jefferson Snider, Markus Petters, North Carolina State University

Investigating the Effect of Temperature Cycles on Gas-Particle Phase Transitioning in Dark Ozonolysis Systems. DANIEL GONZALEZ, Chen Le, Ryan W. Drover, Huawei Li, Yanyu Zhang, Thomas Eckel, David R. Cocker III, University of California, Riverside

Investigating the Heterogeneous Formation and Degradation of Oligomers in Isoprene Epoxydiol-Derived Secondary Organic Aerosol. CARA WATERS, Katherine Kolozsvari, Jin Yan, Madeline Cooke, Alison Fankhauser, N. Cazimir Armstrong, Rebecca Parham, Yao Xiao, Carlie Poworoznek, Zhenfa Zhang, Avram Gold, Jason Surratt, Andrew Ault, University of Michigan

Investigating the Significance of Water Associated With Organic Matter Towards Atmospheric Aerosol Liquid Water Content in Florida. MEGAN NEUMANN, Marwa El-Sayed, Shannon Capps, Embry-Riddle Aeronautical University

Isoprene Peroxy Chemistry Operates Competitively in Areas of East China. XUAN ZHANG, National Center for Atmospheric Research

Kinetics in Colliding Microdroplets: Accelerated Synthesis of Azamonardine from Dopamine and Resorcinol. EMILY BROWN, Grazia Rovelli, Kevin R. Wilson, Lawrence Berkeley National Laboratory

Kinetics of Hypochlorous Acid Reactions with Organic and Chloride-Containing Tropospheric Aerosol. SPIRO JORGA, Tengyu Liu, Yutong Wang, Sumaiya Hassan, Han N. Huynh, Jonathan Abbatt, University of Toronto

Laboratory Constraints on Photochemical Processing of Biomass Burning-Derived Secondary Organic Aerosol. MARIA ZAWADOWICZ, Yuzhi Chen, John Shilling, Gregory W. Vandergrift, Tania Gautam, Swarup China, Arthur J. Sedlacek, Brookhaven National Laboratory

Laboratory Studies of Photolysis Aging of Brown Carbon Aerosols. DIEGO CALDERON-ARRIETA, Ana Morales, Taylor Estock, Anusha P.S. Hettiyadura, Chunlin Li, Yinon Rudich, Alexander Laskin, Purdue University

Light Exposure of Wood Smoke Aerosols: Link between Chemical Composition and Optical Properties. CAROLYN LIU-KANG, Anna Sokolova, Jonathan Abbatt, University of Toronto

Marginal Seas as Receptors and Reactors of Marine Aerosols: A Case Study of the Yellow Sea. ANDREW LOH, Donghwi Kim, Joon Geon An, Narin Choi, Un Hyuk Yim, Korea Institute of Ocean Science and Technology

Mass and Physical Property Changes of Organic Aerosol (OA) Induced by Photolytic Aging. BIN BAI, Yuchen Wang, Nara Shin, Yaowei Li, Frank Keutsch, Nga Lee Ng, Pengfei Liu, Georgia Institute of Technology

Measurements of Singlet Oxygen and Organic Triplet Excited States in Aqueous Aerosols in Hong Kong, South China. THEODORA NAH, Yuting Lyu, Yin Hau Lam, Yitao Li, Nadine Borduas-Dedekind, City University of Hong Kong

Measurements of Urban Secondary Organic Aerosol as a Function of Precursor Volatility Class in the Los Angeles Area during Summer 2022. MELISSA MORRIS, Benjamin Schulze, Andrew Jensen, Douglas A. Day, Pedro Campuzano-Jost, Anne Handschy, Melinda Schueneman, Seonsik Yun, Dongwook Kim, Donna Sueper, Harald Stark, Joost de Gouw, John Seinfeld, Paul Wennberg, Jose-Luis Jimenez, University of Colorado, Boulder

Mechanistic Insights into NO3 Oxidation of Furfural from Chamber Study. RAPHAEL MAYORGA, Kunpeng Chen, Nilofar Raeofy, Michael Lum, Bradley Ries, Roya Bahreini, Ying-Hsuan Lin, Haofei Zhang, University of California, Riverside

Model of a Photochemically Induced Iron-Copper Cycling in Viscous Organic Aerosol. KEVIN KILCHHOFER, Ashmi Mishra, Peter A. Alpert, Thomas Berkemeier, Allan K. Bertram, Markus Ammann, Laboratory of Atmospheric Chemistry, Paul Scherrer Institute

Modeled Impact of Deposition on the Oxidation Pathways of Common Reactive Precursors. CHENYANG BI, Gabriel Isaacman-VanWertz, Virginia Tech

Molecularly Revealing 3D Structure of Organic Aerosol Particles Using Mass Spectrometry Imaging. ZIHUA ZHU, Fan Mei, Jeffrey Dhas, Zezhen Cheng, Pacific Northwest National Laboratory

Multi-Generational Autoxidation Chemistry in the α-Pinene+Oh System and Dual Roles for NO in SOA Formation. MASAYUKI TAKEUCHI, Jean Rivera-Rios, Nga Lee Ng, Ivan Piletic, Emma D'Ambro, Joel A. Thornton, Benjamin Murphy, Havala Pye, Georgia Institute of Technology

New Insights into the Detection and Chemistry of Levoglucosan in Biomass Burning Aerosol - Heterogeneous Chemistry and Novel Detection Methods. RAN ZHAO, Dylan Long, Max Loebel Roson, University of Alberta

Non-Equilibrium Behavior in Fresh Isoprene Secondary Organic Aerosol. Yuzhi Chen, Rahul Zaveri, Gregory W. Vandergrift, Zezhen Cheng, Swarup China, Alla Zelenyuk, JOHN SHILLING, Pacific Northwest National Laboratory

On the Dominant Role of Sulfate Chemistry on New Particle Formation during Summer in Houston. JEREMY WAKEEN, James Smith, Xuanlin Du, Don Collins, O'Donnell Samuel, Jeffrey R. Pierce, University of California, Irvine

Organic Nitrates Regulate the Production of Urban Secondary Organic Aerosol and Ozone. JUNFENG WANG, Jianhuai Ye, Hong Liao, Jie Zhang, Ke Li, Xinlei Ge, Daniel Jacob, Nanjing University of Information Science and Technology

Organosulfur Speciation in Archean Analog Aerosols: Molecular Characterization and Formation Mechanisms. CADE CHRISTENSEN, Nathan Reed, Jason Surratt, Margaret Tolbert, Eleanor Browne, University of North Carolina at Chapel Hill

Oxidative Potential and ROS Speciation in Organoselenium Derived Secondary Organic Aerosols. MICHAEL LUM, Erin Bowey, Linhui Tian, Kunpeng Chen, Ningjin Xu, Ying Zhou, Alexa Canchola, Wonsik Woo, Don Collins, Roya Bahreini, Ying-Hsuan Lin, University of California, Riverside

Photoaging of Phenolic Secondary Organic Aerosol in the Aqueous Phase: Evolution of Chemical and Optical Properties and Effects of Oxidants. WENQING JIANG, Christopher Niedek, Cort Anastasio, Qi Zhang, University of California, Davis

Photochemical Production of Light-absorbing Syringol Secondary Organic Aerosol in Droplets using an Atmospheric Simulation Chamber. LELIA HAWKINS, Ellie Smith, Linden Conrad, Jacob Weber, David De Haan, Christian Carmona, Duncan Ugland, Matthew-Khoa Tran, Jean-François Doussin, Mathieu Cazaunau, Aline Gratien, Michael R. Giordano, Mikael Ehn, Frans Graeffe, Liine Heikkinen, Peter F. DeCarlo, Matthieu Riva, Mario Contin, Harvey Mudd College

Photoenhanced Radical Formation from Secondary Organic Aerosols and Surrogate Mixtures Derived from Biomass Burning Organic Aerosol Components. LENA GERRITZ, Meredith Schervish, Pascale Lakey, Tim Oeij, Jinlai Wei, Sergey Nizkorodov, Manabu Shiraiwa, University of California, Irvine

Photooxidative Fate of Atmospheric Methylated Selenium Compounds. ERIN BOWEY, Yumeng Cui, Roya Bahreini, Kunpeng Chen, Linhui Tian, Michael Lum, Ying-Hsuan Lin, Don Collins, University of California, Riverside

Predictions of Secondary Organic Aerosol Formation from Consumer Products. HUAWEI LI, Qi Li, David R. Cocker III, University of California, Riverside

Products of Alkoxy Radical Reactions in the Atmospheric Aqueous Phase: Impact of Chemical Structure on Product Distributions. LEXY LEMAR, Victoria Barber, Yaowei Li, Frank Keutsch, Jesse Kroll, MIT

Properties of Surfactants in Size-Resolved Atmospheric Aerosol Particles. AMANDA FROSSARD, Tret Burdette, Rachel Bramblett, Kathryn Zimmermann, University of Georgia

Quantified Volatility Distributions from Monoterpene SOA. DAVID BELL, Jun Zhang, Jens Top, Natasha Garner, Fabian Mahrt, Mihnea Surdu, André S. H. Prévôt, Imad El Haddad, Paul Scherrer Institute

Quantifying the Impact of Agricultural Ammonia Increases on Particulate Matter Burden over the Midwestern United States. TOAN VO, Amy Christiansen, University of Missouri - Kansas City

Rapid Photolysis Decay of Gaseous Organic Nitrates Formed from Hydroxyl and Nitrate Radical Oxidation of α-Pinene and β-Pinene. MASAYUKI TAKEUCHI, Yuchen Wang, Nga Lee Ng, Georgia Institute of Technology

Reactions of Nitrate in Aqueous Droplets Initiated by Triplet Energy Transfer. PYEONGEUN KIM, Christian Boothby, Vicki Grassian, Robert Continetti, University of California San Diego

Real-Time Aerosol Mass Spectral Characterization of Aerosols Generated by an Electronic Nicotine Delivery System (ENDS) and Aerosolization of Surrogate E-Liquids as a Function of Humectant Composition and Heating Power. Yue Zhang, JIN YAN, Nicolas Aliaga Buchenau, Manjula Canagaratna, Caz Nichols, Michelle McCombs, Timothy Fennell, Elena Mishina, Samanthan Reilly, Marcella Ferlito, Kamau Peters, Jonathan Thornburg, Jason Surratt, University of North Carolina at Chapel Hill

Reevaluating Isoprene Oxidation Pathways and Their Influence on Secondary Organic Aerosol Formation. CHUANYANG SHEN, Haofei Zhang, University of California, Riverside

Revealing the Chemical Processes Governing the Evolution of Particle Oxidation Products from Naphthalene OH Initiated Oxidation. FÉLIX SARI DORÉ, Yanjun Zhang, Cecilie Carstens, Jens Top, Clément Dubois, Sebastien Perrier, Imad El Haddad, David Bell, Matthieu Riva, CNRS-IRCELYON

Scrambling of Molecular Speciation of Gaseous Oxidized Mercury via Surface Reactions on Atmospheric Aerosols. ALEXEI KHALIZOV, Na Mao, New Jersey Institute of Technology

Seasonal Comparison of Particulate Matter Chemical Composition in Riverside, California. ALEXANDER B. MACDONALD, Xuanlin Du, Ningjin Xu, Ying Zhou, Cesunica E. Ivey, Don Collins, Roya Bahreini, University of California, Riverside

Seasonal Variation in Molecular Composition of Organic Aerosol at the Southern Great Plains Observatory. GREGORY W. VANDERGRIFT, Sonja Moons, Nurun Nahar Lata, Zezhen Cheng, Darielle Dexheimer, Rahul Zaveri, Fan Mei, Swarup China, Pacific Northwest National Laboratory

Seasonal Variation of Fine Particulate Matter-Bound Toxic Metals in a Typical South Asian Industrial City. MUHAMMAD IBRAHIM, Afifa Aslam, Abid Mahmood, Government College University Faisalabad, Pakistan

Secondary Organic Aerosol Formation from Glycol Ethers. REINA BUENCONSEJO, Haroula D. Baliaka, Paul Wennberg, John Seinfeld, California Institute of Technology

Secondary Organic Aerosol Formation from OH-Initiated Oxidation of o-cresol. Cecilie Carstens, David Bell, FÉLIX SARI DORÉ, Jens Top, Clément Dubois, Yanjun Zhang, Sebastien Perrier, Imad El Haddad, Matthieu Riva, CNRS-IRCELYON

Sensitivity of PM2.5, and Nitrate Concentrations to NH3, HNO3, and SO42- Control in NH3-Rich Urban Areas: A Case Study of Seoul, South Korea. JOONHYEOK CHOI, Ji Yi Lee, Joonyoung Ahn, Mijung Song, Jeonbuk National University

Simultaneously Characterizing the Volatility Distribution and Phase State of Laboratory-Generated and Ambient Aerosol Particles with a Vocus 2R Chemical Ionization Mass Spectrometer. Sining Niu, Jordan Krechmer, Harald Stark, YUE ZHANG, Texas A&M University

Source Apportionment and Phase Partitioning of Atmospheric Semi-Volatile Organic Compounds during the Alaskan Wintertime. KAROLINA CYSNEIROS DE CARVALHO, Ellis Robinson, Andrew Holen, Judy Wu, Vanessa Selimovic, Damien Ketcherside, William Simpson, Peter F. DeCarlo, Kerri Pratt, Lu Hu, Robert J. Yokelson, Brent Williams, Washington University in St. Louis

Sources and Global Distribution of Atmospheric Perchlorate Aerosol. PEDRO CAMPUZANO-JOST, Dongwook Kim, Hongyu Guo, Benjamin A. Nault, Jason Schroder, Rainer Volkamer, Joseph Katich, Joshua P. Schwarz, Chelsea Thompson, Jeff Peischl, Thomas Ryerson, Andrew Weinheimer, Alessandro Franchin, Teresa Campos, Rebecca Hornbrook, Alan Hills, Eric Apel, Roisin Commane, Bruce Daube, Steven Wofsy, Glenn Diskin, Yuk Chun Chan, Lyatt Jaegle, Jose-Luis Jimenez, CIRES, University of Colorado, Boulder

Structures and Formation Mechanisms of Molecular Products in Pinene Secondary Organic Aerosol. CHRISTOPHER KENSETH, Samir Rezgui, Jing Chen, Nathan Dalleska, Henrik Kjaergaard, Brian Stoltz, Joel A. Thornton, Paul Wennberg, John Seinfeld, California Institute of Technology

Studies of Isoprene SOA Formation Under Atmospherically-Relevant RO2 Conditions. NADIA TAHSINI, Hannah Kenagy, Matthew Goss, Yaowei Li, Frank Keutsch, Jesse Kroll, MIT

The Influence of Inorganic Salts on the Gas-Aqueous Partitioning of Formic Acid and Acetic Acid. AMIR BABAEI GHAREHBAGH, Rose Taylor, Joy Kiguru, Alyssa Burns, Annmarie Carlton, Christopher Hennigan, University of Maryland, Baltimore County

The Response of Summertime Organic Aerosol Composition to Emission Controls in the Northeastern United States. JIE ZHANG, Junfeng Wang, Yele Sun, Shan Zhou, ManishKumar Shrivastava, Alexandra Catena, Nga Lee Ng, Qi Zhang, James Schwab, Atmospheric Sciences Research Center, University at Albany

The Role of Particle-Phase Criegee Intermediates in the Ozonolysis of Organic Aerosol. RYAN REYNOLDS, Kevin R. Wilson, Lawrence Berkeley National Laboratory

The Sensitivity of Modeled Secondary Organic Aerosol (SOA) Formation to Differences in Speciation Profiles of Biomass Burning Derived Non-Methane Organic Gases (NMOGs). SAMIHA BINTE SHAHID, William P. L. Carter, Robert J. Yokelson, Kelley Barsanti, University of California, Riverside

Understanding the Effect of NOx on the Secondary Organic Aerosol Formation from Phenolic Compounds from Biomass Burning. DAVID PANDO, Magesh K. Mohan, Rodney J. Weber, Nga Lee Ng, Georgia Institute of Technology

Unexpectedly Rapid Removal of Sodium Methanesulfonate upon Heterogeneous OH Oxidation Revealed by Smog Chamber Experiment. SZE IN MADELEINE NG, Zi Jun Li, Angela Buchholz, Iida Pullinen, Snehitha M. Kommula, Aki Nissinen, Mitchell Alton, Pasi Yli-Pirilä, Merete Bilde, Annele Virtanen, Marianne Glasius, Siegfried Schobesberger, Man Nin Chan, The Chinese University of Hong Kong

Unraveling the Link between Real-Time Light-Absorption Properties and Offline Molecular Composition of Brown Carbon Aerosol. VAIOS MOSCHOS, Cade Christensen, Marc Fiddler, Barbara Turpin, Solomon Bililign, Jason Surratt, NCAT & UNC-Chapel Hill

Wildfire Emissions - Source Apportionment and Ageing Effects Analyses via Single-Particle Profiling of Polycyclic Aromatic Hydrocarbons. JOHANNES PASSIG, Ellen-Iva Rosewig, Julian Schade, Mika Ihalainen, Kerneels Jaars, Kajar Köster, Stefan Siebert, Olli Sippula, Markus Somero, Pasi Yli-Pirilä, Pieter G. van Zyl, Annele Virtanen, Ville Vakkari, Andreas Walte, Ralf Zimmermann, Helmholtz Zentrum München and University of Rostock