Aerosol Chemistry

A Comparison of Ambient and Chamber Organic AMS Spectra Under Varying RO2 Regimes. Elinor Caballero, Nadia Tahsini, Matthew Goss, Lesly Franco Deloya, Erik Helstrom, Jesse Kroll, HANNAH KENAGY, University of Minnesota

A Missing Pool of Particle Photooxidants: Photochemistry of Water-Insoluble Chromophores from Wildfire Smoke Particles. LAURA MARIE DAHLER HEINLEIN, Sydney Ma, Murat Onder, Monika Madhiyan, Mingsheng Fang, Jiayun Zhao, Yue Zhang, Kyle Moore, Cort Anastasio, University of California, Davis

Abundance and Gas-Particle Partitioning of Inorganic Bromine in the Remote Atmosphere. DONGWOOK KIM, Pedro Campuzano-Jost, Benjamin A. Nault, Jason Schroder, Douglas A. Day, Michael Cubison, Jack Dibb, Patrick Veres, J. Andrew Neuman, Jin Liao, Greg Huey, Yuk Chun Chan, Lyatt Jaegle, Alan Fried, Thomas Ryerson, Andrew Weinheimer, Glenn Diskin, Eric Apel, Rebecca Hornbrook, Alan Hills, Donald Blake, Rainer M. Volkamer, Jose Jimenez, CIRES & University of Colorado Boulder

Aerosol Composition and Ice Nucleation Potential Across Altitudes in a Forested Mountain Environment: Observations from Crested Butte. NURUN NAHAR LATA, Jessie Creamean, Thomas Hill, Paul DeMott, Russell Perkins, Sonia Kreidenweis, Zezhen Cheng, Darielle Dexheimer, Julia Laskin, Daniel Feldman, Swarup China, Pacific Northwest National Laboratory

Applying Single Particle Levitation to Explore the Properties of Aqueous Brown Carbon Aerosol. PRAKRITI SINGH, Erin Bowey, James F. Davies, Paula K. Hudson, University of California, Riverside

Aqueous Processing of Volatile Organoselenium-derived Secondary Aerosols Results in Reactive Oxygenated Species Production. MICHAEL LUM, Ying Zhou, Erin Bowey, Lillian Tran, Linhui Tian, Wonsik Woo, Dimitri Niks, Aiden Pianalto, Yiwen Zhu, Yujie Men, Don Collins, Roya Bahreini, Ying-Hsuan Lin, University of California, Riverside

Biomass Burning Organic Aerosols as a Pool of Atmospheric Reactive Triplets to Drive Multiphase Reactions. ZHANCONG LIANG, Liyuan Zhou, Yuqing Chang, Yiming Qin, Chak K. Chan, King Abdullah University of Science and Technology

Characteristics of Size - Resolved Organic Aerosols Using Offline Aerosol Mass Spectrometry: NYC-METS, Part of the 2023 AEROMMA Campaign. XU HE, Corin Tyler, Yao Xiao, Emily Costa, Delaney Schulteiss, Kayleigh Reilly, Ruizhe Liu, Athena Xu, Nga Lee Ng, Drew Gentner, Andrew P. Ault, Rachel O'Brien, University of Michigan

Characterizing the Stability and Composition of Size Resolved MSA-Amine Aerosol Nanoclusters from 1 – 2.5 nm. COLLEEN MILLER, Paulus Bauer, Véronique Perraud, Barbara Finlayson-Pitts, James Smith, University of California, Irvine

Chemical Composition and Volatility Distribution of Secondary Organic Aerosol Formed through Multiphase Chemical Reactions as a Function of Sulfate Seed Acidity. SINING NIU, Miska Olin, Christopher Rapp, Siddharth Gopalakrishnan, Hannah LeClear, Jason Surratt, Daniel Cziczo, Yue Zhang, Texas A&M University

Chemical Composition of Fire Smoke-Emitted Organics in the Gas and Aerosol Phase During the Recent G-WISE-2 Prescribed Burn Experiments. VIGNESH VASUDEVAN GEETHA, Lee Tiszenkel, Rawad Saleh, Joseph O'Brien, Shanhu Lee, University of Alabama Huntsville

Comparing the Heterogeneous Reactivity of Viscous and Gel State Particles. STEPHANIE SALAS, Craig Sheldon, Teresa Palacios Diaz, Katie Morton, Kyle McMillan, Ryan Davis, James F. Davies, University of California, Riverside

Comparing the Reactivity of Aqueous Brown Carbon Precursors in Aqueous Solutions and Levitated Droplets. ERIN BOWEY, Prakriti Singh, James F. Davies, Paula K. Hudson, University of California, Riverside

Composition of Aerosols Formed by OH, Cl, or Ozone-initiated Oxidation of Limonene. ANITA AVERY, Mitchell Alton, Manjula Canagaratna, Andrew Lambe, Aerodyne Research, Inc.

Concentration-Dependent Photochemical Evolution of Primary Brown Carbon under Irradiation. SITHUMI LIYANAGE, Colton Calvert, Holly Anthony, Elijah Schnitzler, Oklahoma State University

Controlling the Morphology of Microparticles Formed by Evaporation of Aerosol Droplets Containing Polymer Nanoparticles. SORREL K. HAUGHTON, Panagiotis Georgiou, Lukesh K. Mahato, Steven P. Armes, Jonathan P. Reid, University of Bristol

Dark Ozonolysis of cis-Cycloalkenes (C5-C8): Investigating SOA Formation, Transition Temperatures, and Temperature Cycling Effects in the UCR Atmospheric Chamber. DANIEL GONZALEZ, Sunandan Mahant, Yanyu Zhang, Markus Petters, David R. Cocker III, University of California, Riverside

Dependence of Reactive Oxygen Species Formation on Oxidation State of Biogenic Secondary Organic Aerosols. Kasey Edwards, LENA GERRITZ, Meredith Schervish, Manjula Canagaratna, Anita Avery, Mitchell Alton, Lisa Wingen, Jackson Ryan, Celia Faiola, Andrew Lambe, Sergey Nizkorodov, Manabu Shiraiwa, University of California, Irvine

Direct Determination of Aerosol Acidity in Model Continental Aerosol Particles. KOMAL JASWAL, Victoria Adekunle, Miriam Freedman, The Pennsylvania State University

Direct Measurement of the Acidity of Model Marine Aerosol Particles Using Carbon Quantum Dots. VICTORIA ADEKUNLE, Komal Jaswal, Miriam Freedman, The Pennsylvania State University

Effect of Mineral Dust Transition Metal Oxides on Photochemistry of Secondary Organic Aerosols. ANTHONY JUE, Sergey Nizkorodov, University of California, Irvine

Enhanced Light Absorption of Levitated Droplets of Methoxyphenols upon Uptake and Complexation of Benzoquinone. AHMADRAZA CHAUDHARY, Micah Miles, Colton Calvert, Elijah Schnitzler, Oklahoma State University

Enhanced Organosulfates Production from Multiphase Reactions of Terpenes with Acidified Sulfate Seeds Using LED-powered Environmental Smog Chamber. YUE ZHANG, Miska Olin, Sining Niu, Hannah LeClear, Christopher Rapp, Jiayun Zhao, Jason Surratt, Daniel Cziczo, Texas A&M University

Evaluating Approaches to Simplify Automatically Generated Oxidation Reaction Mechanisms. NAZIFA SAYEED, Jia Jiang, Kelley Barsanti, Gabriel Isaacman-VanWertz, Virginia Tech

Expanding Aerosol Acidity Measurements to the Water-Limited Regime and Complex Chemical Systems: A Coupled Condensational Growth and Colorimetric Approach. CARA WATERS, Mia Kauffman, Evan Dalton, Zhenfa Zhang, Avram Gold, Jason Surratt, Andrew P. Ault, University of Michigan

Exploring Solvation and Aggregation Effects in Microdroplets Using Time-Resolved Fluorescence. MIN-HSIEN (TONY) KAO, Conlan Broderick, Jim Walker, Thomas A. A. Oliver, Andrew J. Orr-Ewing, Bryan R. Bzdek, University of Bristol

Formation of Aqueous SOA From Water-Soluble Gaseous Products of Monoterpene Oxidation. MATT ZARAGOZA, Lisa Wingen, Sergey Nizkorodov, Annmarie Carlton, University of California, Irvine

Halogen Activation by Photosensitized Processes in Atmospheric Aerosol Particles. ELEANOR MIKO, Sergey Nizkorodov, University of California, Irvine

How Size-Dependent Aerosol Surface Tension Descriptions Impact Predictions of Hygroscopic Growth and Cloud Droplet Activation. EMILY WERNER, Makaila Hammond, Alison Bain, Oregon State University

Identifying Gas- and Particle-Phase Tracers to Quantify the Extent of Chlorine Oxidation in the Remote Atmosphere. SEAMUS FREY, Hannah Kenagy, Yaowei Li, Frank Keutsch, Jesse Kroll, MIT

Illuminating Chemical Mechanism Gaps through Modeling Secondary Pollutants from Volatile Chemical Products. AMEL KSAIBATI, Huiying Luo, Abraham Dearden, Matthew Coggon, Katelyn Rediger, Carsten Warneke, Lu Tan, Damien Ketcherside, Lu Hu, Cort Zang, Tucker Melles, Audrey Lawrence, Megan Willis, Lauren A. Garofalo, Delphine K. Farmer, Shantanu Jathar, Colorado State University

Impact of Relative Humidity on Chemical Transformations in Biomass Burning Organic Aerosol (BBOA) Particles During Long-term Photolysis-driven Aging. JANIE (YEASEUL) KIM, Willow Hwang, Manjula Canagaratna, Benjamin A. Nault, Anita Avery, Mitchell Alton, Lisa Azzarello, Elise Palombella, Christopher Cappa, Cora Young, Rachel O'Brien, University of Michigan

Implementation and Assessment of the Automated MOdel REduction (AMORE v2.0) Algorithm on α-Pinene. KATHERINE STEVENSON, Forwood Wiser, V. Faye McNeill, Columbia University

Influence of Inorganic Ions on the Phase Behavior of Organic Rich Aerosol Particles. KIRAN REDDY PITTA, Komal Jaswal, Sylvain Foisy, Miriam Freedman, The Pennsylvania State University

Insights on the Importance of Intermediate and Semi-volatile Organic Precursor Compounds in the Formation of Ambient SOA. MARKUS MUELLER, Tobias Reinecke, Markus Leiminger, Todd Rogers, Martin Graus, IONICON Analytik GmbH., Innsbruck, Austria

Interactions of Anthropogenic Pollution with Biogenic Organic Aerosols in a Forested Region of Central China. YUEMEI HAN, Xin Zhang, Lijuan Li, Jianjun Li, Yue Lin, Yan Cheng, Rui Wang, Shuyan Xing, Chongshu Zhu, Junji Cao, Institute of Earth Environment, Chinese Academy of Sciences

Investigating Atmospheric Emissions of Nanoplastic Fibers from Domestic Tumble Dryer Activities: A Study Using Aerosol Mass Spectrometry. MICHAEL A.R. TAWADROUS, Alex K.Y. Lee, Arthur W. H. Chan, University of Toronto

Linking the Physicochemical Properties of Brown Carbon to the Production of Singlet Oxygen and Organic Triplets Excited States in Atmospheric Aqueous PM2.5. THEODORA NAH, Yuting Lyu, Yitao Li, Ruihan Ma, Tianye Zhou, City University of Hong Kong

Liquid-Liquid Phase Separation of Atmospheric Aerosols: Effect of Oxygen to Carbon Ratios on Dynamics of Partitioning. NATHAN EDDINGSAAS, Jay Denison, Rochester Institute of Technology

Long-term Trends of Size-Resolved Secondary Inorganic Aerosols in Beijing During the Summer and Winter Seasons from 2013 to 2023. Liang Luo, SHILI TIAN, Yanju Liu, Beijing Center for Physical and Chemical Analysis

Low-Temperature Flow Tube Studies of Secondary Organic Aerosol Formation. MATTHEW GOSS, Frank Keutsch, Harvard University

Measurements and Modeling 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 V. Handschy, Melinda Schueneman, Seonsik Yun, Dongwook Kim, Donna Sueper, Harald Stark, Benjamin Murphy, T. Nash Skipper, Havala Pye, John Crounse, Joost A. de Gouw, John Seinfeld, Paul Wennberg, Jose Jimenez, CIRES & University of Colorado Boulder

Measurements of Aqueous-Phase Secondary Organic Aerosol Processing. JOHN SHILLING, Jesse Anderson, Will Cantrell, Richard Flagan, Jose Fuentes, Gourihar Kulkarni, Mikhail Pekour, Hamed Sadi, Raymond Shaw, Suryadev Singh, ManishKumar Shrivastava, Jaemin Yeom, Maria Zawadowicz, Alla Zelenyuk, Yuzhi Chen, Tania Guatam, Pacific Northwest National Lab

Measurements of Surrogate Respiratory Sessile Droplet pH and Implications for Exhaled Respiratory Aerosol and Airborne Disease Transmission. Jianghan Tian, Beiping Luo, Aidan Rafferty, Allen E. Haddrell, Ulrich Krieger, JONATHAN P. REID, University of Bristol

Measuring Protein Dynamics in Levitated Microdroplets. VIOLA FIELGEIN, Michael Jacobs, Texas State University

Modeling Secondary Organic Aerosol Formation During Daytime and Nighttime via Multiphase Reactions of Phenolic Compounds. TAMANNA TASNIM, Myoseon Jang, Quang Tran Vuong, University of Florida

Modeling the Impacts of Volatile Chemical Products (VCPs) on Ozone and Secondary Organic Aerosol Using the SAPRC Mechanism. JESSSICA COATS, Amirashkan Askari, Craig Stroud, Arthur W. H. Chan, University of Toronto

Molecular-Level Understanding of New Particle Formation Processes Under the Conditions Relevant to Mixed Forests in the Southeastern United States. LEE TISZENKEL, Vignesh Vasudevan Geetha, Astrid Pedersen, Jonas Elm, Shanhu Lee, The University of Alabama in Huntsville

New Perspectives on Decades of SOA Formation Studies: A Comprehensive Laboratory Data Review from UCR. YANYU ZHANG, David R. Cocker III, University of California, Riverside

Optimizing Aerosol Composition in Hygroscopic Burn-in-Place Flares: Advancing Cloud Seeding and Precipitation Enhancement. SWAFUVA SULAIMAN, Kurt Hibert, James Simmons, Hamed Sadi, Amir Nazem, Suryadev Singh, Andrei Vakhtin, Bruce Boe, Jesse Anderson, Charlie Harper, Raymond Shaw, Will Cantrell, Michigan Technological University

Oxidative History Controls the Composition and Fate of Biomass-Burning-derived Phenolic compounds: Sequential OH and NO3 Oxidation. MADELEINE SZE IN NG, David Pando, Bin Bai, Heather O. LeClerc, Pengfei Liu, Drew Gentner, Andrew Lambe, Nga Lee Ng, Georgia Institute of Technology

Particle-Phase Peroxides Form Carboxylic Acids in Pinene Secondary Organic Aerosol. CHRISTOPHER KENSETH, Jing Chen, Olivia Hakan, Donterrio Moore, Matthieu Riva, Michael Kamrath, Yuzhi Chen, John Shilling, Henrik Kjaergaard, Joel A. Thornton, University of Washington

Photochemical Aging of Lab-Generated Triclosan Aerosols in the Presence of •OH and Salts. DIANA TRAN, Jonathan Slade, University of California, San Diego

Photooxidation of Dimethyl Selenide by OH and OH+NOx: Chemical Products and Bulk Aerosol Properties. ERIN BOWEY, Linhui Tian, Lillian Tran, Alexa Canchola, Michael Lum, Yumeng Cui, Ying Zhou, Don Collins, Ying-Hsuan Lin, Roya Bahreini, University of California, Riverside

Phthalate Transfer and Enrichment in Artificial Sea Spray Aerosols. MOLLY HEDIN, Kanuri Roundtree, Diana Tran, Maya Morris, Xitlali Ventura, Jonathan Slade, University of California, San Diego

PM2.5 Composition at the Houston-Liberty ASCENT Site. ANANDI WILLIAMS, Subin Yoon, Eugenia Velasco-Cunningham, Sergio Alvarez, Robert Griffin, James Flynn, Roya Bahreini, Ann M. Dillner, Armistead G. Russell, Nga Lee Ng, Fangzhou Guo, University of Houston

Precursor Concentration and Molecular Structure Influence the Viscosity and Volatility of Secondary Organic Aerosol Derived from Sesquiterpene Ozonolysis. SIJIA LIU, Amna Ijaz, ManishKumar Shrivastava, Sergey Nizkorodov, Celia Faiola, Alla Zelenyuk, Pacific Northwest National Laboratory

Probing Reaction Pathways of RO2 Radicals in the Atmospheric Aqueous Phase. LEXY LEMAR, Seamus Frey, Yaowei Li, Frank Keutsch, Jesse Kroll, MIT

Probing the Role of Intermolecular Interactions in the Light Absorption of Biomass Burning Organic Aerosol. Colton Calvert, Holly Anthony, Ahmadraza Chaudhary, Micah Miles, ELIJAH SCHNITZLER, Oklahoma State University

Production of Dissolved Iron from Atmospheric Processing of Ultrafine and Fine Iron Oxides: Effects of Size and Mineralogy. HEATH D.K. PATTERSON, Sarah C. Garrett, Jenny P.S. Wong, Mount Allison University

Quantifying Chlorine Production from Photocatalysis of Iron Chloride Aerosol as a Potential Methane Sink. JIN YAN, Marie K. Mikkelsen, Luisa Pennacchio, Maarten van Herpen, Matthew S. Johnson, Mingyi Wang, University of Chicago

Rethinking the Sources of Secondary Organic Aerosol: The Case of Sesquiterpenes and β-Caryophyllene. ANGELIKI MATRALI, Christina N. Vasilakopoulou, Stella Eftychia Manavi, Petro Uruci, Damianos Pavlidis, Elena Voutsina, Spyros Ν. Pandis, University of Patras, Greece

Salting Effects Alter the Gas-Aqueous Partitioning and SOA Potential of Formic and Acetic Acid. AMIR BABAEI-GHAREHBAGH, Rose Taylor, Vikram Pratap, Annmarie Carlton, Christopher Hennigan, University of Maryland, Baltimore County

Significant Photoproduction of Singlet Oxygen from Aqueous Extracts of Biomass-Burning Aerosol. DANIEL BONOMO, Ryan Sullivan, Carnegie Mellon University

Simulating Prebiotic Earth Environments to Explore the Role of Aerosol Particles in Abiogenesis. STEPHANIE SALAS, Aaron Palmisano, Thomas Preston, Alexander Logozzo, James F. Davies, University of California, Riverside

Superoxide Burst upon Photochemical Aging of Secondary Organic Aerosols Derived from Biomass Burning Precursors. LENA GERRITZ, Meredith Schervish, Sergey Nizkorodov, Manabu Shiraiwa, University of California, Irvine

The Critical Role Of Synthetic Chemistry In Identifying Isoprene-Oxidation Products β-HPALD In Isoprene-Derived Secondary Organic Aerosol. REBECCA L. RICE, Zhenfa Zhang, Avram Gold, University of North Carolina at Chapel Hill

The Detection Efficiency of Sulfuric Acid Using a Nitrate-CIMS: Impacts of Base Molecules. JUN ZHENG, Nanjing University of Information Science and Technology

The Influence of Road Salt on Nitryl Chloride Formation from Aerosol and Urban Grime Surfaces in Urban, Continental, Wintertime Environments. EMMA MCLAY, Trevor VandenBoer, Nasrin Dashti, Cora Young, York University

Time-resolved Photochemistry of Pyruvic Acid. CONLAN BRODERICK, Min-Hsien (Tony) Kao, Bryan R. Bzdek, Andrew J. Orr-Ewing, University of Bristol

Understanding Key Oxidant and RO₂ Regime Combinations in Indoor Spaces. ISABEL ALBORES, Hannah Kenagy, Jesse Kroll, MIT

Understanding Secondary Organic Aerosol (SOA) Formation over the Southeast USA in the Context of the DOE AMF3 Field Measurements at the Bankhead National Forest (BNF). MANISHKUMAR SHRIVASTAVA, Brian Gaudet, Alla Zelenyuk, Jerome Fast, Sijia Liu, Sergey Nizkorodov, Celia Faiola, Gregory W. Vandergrift, Zezhen Cheng, Swarup China, Pacific Northwest National Laboratory

Understanding Surface pKa of Molecules in Macroscale Solution and Microdroplets: A partitioning perspective. Rebika Tamang, Jacob Twichell, Madelyn Johnston, MICHAEL JACOBS, Texas State University

Unexpected Stereochemical Specificity for Organosulfates Formed from Isoprene-Epoxide Ring Opening Reactions as a Function of Aerosol Acidity. ANDREW P. AULT, Madeline Cooke, N. Cazimir Armstrong, Cara Waters, Qiyuan Zhao, Scarlet Aguilar-Martinez, Yuzhi Chen, Ziying Lei, Zhenfa Zhang, Avram Gold, Paul Zimmerman, Jason Surratt, University of Michigan

Unveiling the Mixing Behavior of Secondary Organic Aerosols from Isoprene and Trimethyl Benzene. YUZHI CHEN, Rahul Zaveri, Alla Zelenyuk, Claire E. Moffett, Gregory W. Vandergrift, Swarup China, John Shilling, Pacific Northwest National Laboratory

Using a Particle-Resolved Model to Design Cloud Chamber Experiments for IEPOX-SOA Formation. MANISHKUMAR SHRIVASTAVA, Jie Zhang, Steven Krueger, John Shilling, Alla Zelenyuk, Yuzhi Chen, Richard Flagan, Mikhail Ovchinnikov, Raymond Shaw, Will Cantrell, Tania Gautam, Gourihar Kulkarni, Mikhail Pekour, Pacific Northwest National Laboratory

Using Tryptophan as an Indicator of pH in Bioaerosol Particle Fluorescence for Temporal Resolution of Aerosol Chemistry. HUNTER RICHARDS, Zhenyu Ma, Allen E. Haddrell, Herek L. Clack, University of Michigan

Vertically Resolved Chemical Speciation of Organic Aerosols at ARM Southern Great Plains. SHAN GU, Lindsay Yee, Gregory W. Vandergrift, Swarup China, Darielle Dexheimer, Allen Goldstein, University of California, Berkeley

Volatility-Resolved In-Situ Chemical and Optical Characterization of Brown Carbon as a Function of Atmospheric Aging Using Advanced Chemical Ionization Mass Spectrometry with Aerosol Evaporation Technique. JIAYUN ZHAO, Mingsheng Fang, Guoyang Lei, Raghu Betha, Garrett McKay, Yue Zhang, Texas A&M University

Water Surfaces and Multiphase Chemistry in/on Droplets: Towards a Molecular View of Atmospheric Chemistry at the Air-Aqueous Solution Interface. ALEXANDRA DEAL, Franky Bernal, Andreas Siebert, Alexander Prophet, Mauricio Lopez Luna, Monika Blum, Richard Saykally, Kevin R. Wilson, Lawrence Berkeley National Laboratory