American Association for Aerosol Research - Abstract Submission

AAAR 39th Annual Conference
October 18 - October 22, 2021

Virtual Conference

Monday     -     Tuesday     -     Wednesday     -     Thursday     -     Friday


Wednesday

Wednesday 8:00 AM - 9:15 AM
Plenary III



8:00
  		 Aerosols in Chemistry and the Chemistry of Aerosols Murray Johnston, University of Delaware


  		 Moderator Dan Murphy, National Oceanic and Atmospheric Administration

9:00
  		 Whitby Award Presentation, Mercer Award Announcement Sheryl Ehrman, Awards Committee Chair, San Jose State University

Wednesday 9:30 AM - 10:30 AM
Session 7: Platform



7AC AEROSOL CHEMISTRY VII
Sergey Nizkorodov and Joseph Woo, chairs

7AC.1  
9:30		 Production of Formate via Oxidation of Glyoxal Promoted by Particulate Nitrate Photolysis. RUIFENG ZHANG, Masao Gen, Tzung-May Fu, Chak K. Chan, City University of Hong Kong

7AC.2  
9:30		 SOA and Organic Nitrate Formation from the Reaction of α-Pinene with NO3 under Simulated Nighttime Conditions. Kelvin Bates, James Cope, Guy Burke, TRAN NGUYEN, University of California, Davis

7AC.3  
9:30		 Observations of Nitrate Radical Initiated Oxidation of Various Monoterpenes in a Laboratory Chamber Using NO3-CIMS. MICHELIA DAM, Danielle C. Draper, Andrey Marsavin, Juliane Fry, James Smith, University of California, Irvine

7AC.4  
9:45		 The Effect of Viscosity on Rate of Fresh SOA Seed Particles Grown by α-Pinene Ozonolysis. DEVON HAUGH, Michael S. Taylor, Murray Johnston, University of Delaware

7AC.5  
9:45		 Molecular Composition Changes in α-Pinene SOA Due to the presence of PAHs. SIMEON SCHUM, Lynn Mazzoleni, Kaitlyn Suski, Alla Zelenyuk, Michigan Technological University

7AC.6  
9:45		 Formation and Properties of Secondary Organic Aerosol Particles Generated by Oxidation of Cyclic and Acyclic Terpenes. ALLA ZELENYUK, Robert VanGundy, David Bell, Pacific Northwest National Laboratory

7AC.7  
10:00		 Reaction Products and Pathways of Alkoxy Radicals in the Condensed Phase. VICTORIA BARBER, Yaowei Li, Alexander Zaytsev, Francesca Majluf, Jordan Krechmer, Frank Keutsch, Jesse Kroll, MIT

7AC.8  
10:00		 Impacts of Salted Aqueous Phase on Monoterpene SOA Produced under Different Atmospheric Oxidants. SANGHEE HAN, Myoseon Jang, University of Florida

7AC.9  
10:00		 Multiphase Ozonolysis of Unsaturated Lipids – Exploring its Mechanism and Product Reactivity. ZILIN ZHOU, Pascale Lakey, Manabu Shiraiwa, Holly Barrett, Hui Peng, Jonathan Abbatt, University of Toronto, Canada

7AC.10  
10:15		 Vapors are Lost to Walls, Not to Particles on the Wall: Development of Artifact-Corrected Parameters and Implications for Global Secondary Organic Aerosol. KELSEY BILSBACK, Charles He, Jeffrey R. Pierce, Nga Lee Ng, John Seinfeld, Shantanu Jathar, Colorado State University

7AC.12  
10:15		 Photochemical Candy: Use of Isomalt as a Proxy Matrix for Secondary Organic Aerosol. AVERY DALTON, Sergey Nizkorodov, University of California, Irvine

7CT CONTROL TECHNOLOGY I
Shaokai Gao and Jiacheng Yang, chairs

7CT.1  
9:30		 Reevaluating the Filter Pressure Drop Model for Modern Respirators. PATRICK O'SHAUGHNESSY, Zoe Harris, Matthew Purdy, The University of Iowa

7CT.2  
9:30		 An Improved Filtration Model for Gasoline Particulate Filters (GPFs). PENG WANG, Da-Ren Chen, Virginia Commonwealth University

7CT.3  
9:30		 Effective Relative Humidity on Textile Mask Filtration Efficiency and Breathability. JOELLE SEGOVIA, Ching-Hsuan Huang, Nanhsun Yuan, Mei-Yu Liao, Jiayang He, Igor Novosselov, University of Washington

7CT.4  
9:45		 Improving Filtration Performance of Ceramic Wall-flow Filters with Heat Resistant Membrane by a Two-step Coating Method. QISHENG OU, David Y. H. Pui, University of Minnesota

7CT.5  
9:45		 Modeling of Heterogeneous Dustcake Effects by PAC Injection in a Cylindrical Electrostatic Precipitator for Mercury Emissions Control at Coal-Fired Power Plants. ERIC MONSU LEE, Herek Clack, Northern Illinois University

7CT.6  
9:45		 Dual-Geometry Pore-Size-Resolved Wall-Flow Filter Deep-bed Loading Model. WEIQI CHEN, Qisheng Ou, Xin Liu, Matti Maricq, David Kittelson, David Y. H. Pui, University of Minnesota

7CT.8  
10:00		 Continuing Development and Testing of the Electrostatic Battery for Emissions Control (ESBEC). TAEWON HAN, Gediminas Mainelis, Rutgers, The State University of New Jersey

7CT.9  
10:00		 In-Use Emission Measurements from Two High-Speed Passenger Ferries Operating in California. CHAS FREDERICKSON, Wei Liu, Mark Villela, Kent Johnson, David Quiros, Heejung Jung, University of California, Riverside

7CT.10  
10:15		 Liquid Sheet Breakup and Droplet Evolution in Agricultural Sprays. IAROSLAV MAKHNENKO, Long Nguyen, Elizabeth Alonzi, Steven Fredericks, Christine Colby, Cari Dutcher, University of Minnesota

7CT.11  
10:15		 Measurement of Aerosolized HMWO Nanoparticles and Its Application in Liquid Filter Retention Efficiency Characterization. SIQIN HE, Derek Oberreit, Gary Van Schooneveld, Kanomax FMT, Inc.

7HA HEALTH RELATED AEROSOLS III
Yu Feng and Changjie Cai, chairs

7HA.2  
9:30		 Influence of Extreme Air Pollution Episodes on the Oxidative Potential of Ambient Particulate Matter in Delhi, India. JOSEPH V PUTHUSSERY, Ashutosh Shukla, Jay Dave, Sreenivas Gaddamidi, Atinderpal Singh, Dilip Ganguly, Neeraj Rastogi, Sachchida N. Tripathi, Vishal Verma, University of Illinois Urbana-Champaign

7HA.3  
9:30		 Spray Aerosol Emissions from Harmful Cyanobacterial Blooms in the Chowan River, NC. HALEY E. PLAAS, Karsten Baumann, Ryan Paerl, Kimberly Popendorf, Colleen Karl, Jill Paxson, Naomi Chang, Joel Sanchez, Huang Hwa, Malcolm A. Barnard, Daniela Maizel, Hans W. Paerl, University of North Carolina at Chapel Hill

7HA.6  
9:45		 Real-Time Measurement and Source Apportionment of Five Different Endpoints of the Oxidative Potential of Ambient Particulate Matter at an Urban Site. JOSEPH V PUTHUSSERY, Haoran Yu, Yixiang Wang, Ian Cornejo, Vishal Verma, University of Illinois Urbana-Champaign

7HA.7  
10:00		 Aerosol transmission of Respiratory Viral Diseases. DISHA TRIVEDI, MVS Pharma

7HA.8  
10:00		 Sampling Masks for Source-Receptor Determination. DAVID ALBURTY, Ryan Pletka, Shula Jaron, Brian Patch, InnovaPrep LLC

7HA.9  
10:00		 Assessing Residential Bioaerosol and Black Carbon-Related Air Contaminants in the Context of the COVID-19 Shutdown. YAO ADDOR, Reshmi Indugula, Darrel Baumgardner, Tiina Reponen, University of Cincinnati

7HA.10  
10:15		 When Aerosol Science Meets the Respiratory Tract: An Update for Inhaled Particle Modeling. ROBERT PHALEN, Mark Hoover, Roger McClellan, University of California Irvine

7IM INSTRUMENTATION & METHODS IV
Gabriel Isaacman-VanWertz and Pramod Kulkarni, chairs

7IM.1  
9:30		 Condensation Particle Counting in Micro-gravity: Measurements Aboard the International Space Station. Gregory Lewis, Nathan Kreisberg, Steven Spielman, SUSANNE HERING, Marit Meyer, Aerosol Dynamics Inc.

7IM.3  
9:30		 Calibration of an Optical Sensor for Lunar Dust Measurements: Atmospheric and Vacuum Conditions. ABHAY VIDWANS, Brad Jolliff, Jeffrey Gillis-Davis, Pratim Biswas, Washington University in St Louis

7IM.4  
9:45		 Single-Particle Optical Trapping as a Standalone Micro-Reactor for the Study of Particle Loss, Formation, and Chemical Reaction. CHUJI WANG, Yukai Ai, Haifa Alali, Yong-Le Pan, Gorden Videen, Mississippi State University

7IM.5  
9:45		 Realtime Digital Inline Holography for High Fidelity, in Situ and Non-intrusive Aerosol Measurements. JIARONG HONG, Ruichen He, Rafael Placucci, Lei Feng, University of Minnesota

7IM.6  
9:45		 Methods for Optical Trapping and Active Orientation Control of Airborne Microparticles. JESSICA ARNOLD, Aimable Kalume, Gorden Videen, Chuji Wang, Yong-Le Pan, U.S. Army Research Laboratory

7IM.7  
10:00		 Optical-Trapping of Particles in Air Using Parabolic Reflectors and a Hollow Laser Beam: From Submicron to Supermicron Aerosol. AIMABLE KALUME, Jessica Arnold, Yong-Le Pan, U.S. Army Research Laboratory

7IM.8  
10:00		 Comparing Multiple Types of Machine Learning for Characterizing TEM Images of Soot. TIMOTHY SIPKENS, Hamed Nikookar, Max Frei, Frank Einar Kruis, Steven Rogak, University of British Columbia

7IM.9  
10:00		 Effect of Particle Size on Measurement Uncertainty in Quantification of Chemical Components Using Infrared Absorption. KABIR RISHI, Pramod Kulkarni, Bon Ki Ku, Chen Wang, Orthodoxia Zervaki, Elizabeth Ashley, Centers for Disease Control and Prevention, NIOSH

7IM.10  
10:15		 Design and Characterization of Triple-Tube, Laminar-Flow Condensation Nano Spot-Collector: Application to Microscopy and Spectroscopic Analysis of Aerosols. ORTHODOXIA ZERVAKI, Braden Stump, Patricia Keady, Pramod Kulkarni, Dionysios D. Dionysiou, HELD-NIOSH

7IM.11  
10:15		 Open-Hardware Design and Characterization of an Electrostatic Aerosol Precipitator. SABIN KASPAROGLU, Timothy Wright, Markus Petters, North Carolina State University

7IM.12  
10:15		 Development of Aerosol into Liquid Sampler for Collecting Nanoparticles by Combining Particle Size Magnifier and Wet Cyclone. SOICHIRO KATO, Yayoi Inomata, Takafumi Seto, Kanazawa University

7UA URBAN AEROSOLS I
Lea Hildebrandt Ruiz and Yele Sun, chairs

7UA.1  
9:30		 Intra-city Factors Obtained from Dispersion-normalized Multi-time Resolution Factor Analyses of PM2.5 in an Urban Environment. Uwayemi Sofowote, Robert Healy, Yushan Su, Jerzy Debosz, Michael Noble, Anthony Munoz, Cheol H. Jeong, Jonathan Wang, Nathan Hilker, Greg J. Evans, Jeff Brook, Gang Lu, PHILIP K. HOPKE, University of Rochester

7UA.2  
9:30		 Dynamics, Composition and Origin of Submicron Atmospheric Aerosol Measured at Suburban and Traffic Site in Prague, Czech Republic. PETRA POKORNÁ, Nadežda Zíková, Petr Vodicka, Jakub Ondráček, Jaroslav Schwarz, Philip K. Hopke, ICPF CAS, Prague, Czech Republic

7UA.3  
9:30		 State of Gaseous Air Pollutants and Resulting Health Effects in a Developing Country of Southeast Asia (Karachi, Pakistan). OMOSEHIN MOYEBI, Fatim Sannoh, Zafar Fatmi, David Carpenter, Azhar Siddique, Kamran Khan, Jahan Zeb, Mirza M. Hussain, Haider Khwaja, University at Albany, Albany, New York

7UA.4  
9:45		 Modeling Air Quality in Los Angeles During the COVID-19 Pandemic Using CMAQ: Organic Aerosol Chemistry, Speciation, and Source Apportionment. ELYSE PENNINGTON, Yuan Wang, Karl Seltzer, Jiani Yang, Benjamin Schulze, Meemong Lee, Havala Pye, Benjamin Murphy, Christopher Kenseth, Benjamin Moul, Lelia Hawkins, Harrison Parker, John Crounse, Paul Wennberg, John Seinfeld, California Institute of Technology

7UA.5  
9:45		 Factors Influencing Ambient Particulate Matter in Delhi, India: Insights from a Machine Learning Model. KANAN PATEL, Lea Hildebrandt Ruiz, University of Texas at Austin

7UA.7  
10:00		 Hourly Measurements of Organic Aerosol Chemical Species (TAG-GC-MS) at a Receptor Site in Mexico City. Y. MARGARITA MARTÍNEZ-DOMÍNGUEZ, Armando Retama-Hernández, Olivia Rivera-Hernández, Tania Müller-García, Omar Amador-Muñoz, Atmospheric Science Center, UNAM

7UA.8  
10:00		 On-Road Vehicle Emissions Now Account for a Minor Fraction of Organic Aerosol in Los Angeles. BENJAMIN SCHULZE, Christopher Kenseth, Elyse Pennington, Paul Van Rooy, Karl Seltzer, Afsara Tasnia, John Crounse, Barbara Barletta, Simone Meinardi, Donald Blake, Kelley Barsanti, Havala Pye, Paul Wennberg, John Seinfeld, California Institute of Technology

7UA.9  
10:00		 Direct Measurements of Secondary Organic Aerosol (SOA) Response to NOx and VOC Perturbations in the Ambient Atmosphere. SHENGLUN WU, Christopher Cappa, Qi Zhang, Benjamin Schulze, John Seinfeld, Michael Kleeman, University of California, Davis

7UA.10  
10:15		 Secondary Organic Aerosol Formation in Regional Scales by Using Multiphase Reaction of Hydrocarbons. ZECHEN YU, Myoseon Jang, Soontae Kim, Jiwon Choi, Azad Madhu, Sanghee Han, Jinsoo Park, University of Florida

7UA.11  
10:15		 Investigating the Impact of Biomass Burning Aerosols on Urban Air Quality in Los Angeles. MITCHELL ROGERS, Benjamin Schulze, Christopher Kenseth, John Crounse, Paul Wennberg, John Seinfeld, California Institute of Technology

7UA.12  
10:15		 Improved Prediction of Near-Road Vehicle Emissions for Gasoline and Diesel Vehicles Between Emission Simulators and Measured Data from PEMS and Laboratory Measurements. AYLA MORETTI, David R. Cocker III, Matthew Barth, University of California, Riverside

Wednesday 10:45 AM - 11:45 AM
Session 8: Platform



8AC AEROSOL CHEMISTRY VIII
Jesse Kroll and Jonathan Slade, chairs

8AC.1  
10:45		 Nitrate Photolysis in Mixed Sucrose-Nitrate-Sulfate Particles at Different Relative Humidities. ZHANCONG LIANG, Ruifeng Zhang, Masao Gen, Yangxi Chu, Chak K. Chan, City University of Hong Kong, China

8AC.2  
10:45		 Photodegradation of Secondary Organic Aerosols, the Formation of a Photo-Recalcitrant Fraction and Its Effects on Mass, Composition, and Viscosity. VAHE BABOOMIAN, Giuseppe Crescenzo, Yuanzhou Huang, Fabian Mahrt, Allan Bertram, Sergey Nizkorodov, University of California, Irvine

8AC.3  
10:45		 Evolution of the Molecular Composition and Physicochemical Properties of Sea Spray Aerosol in the Presence of OH Radicals. SAMANTHA KRUSE, Paul Tumminello, Allison Kawasaki, Kathryn Mayer, Jon Sauer, Christopher Cappa, Timothy Bertram, Vicki Grassian, Kimberly Prather, Jonathan Slade, University of California, San Diego

8AC.4  
11:00		 Aerosol Composition Measurements Using the Vocus Inlet for Aerosol (VIA): Applications in an Oil and Gas Production Region and an Indoor Cooking Event. DANIEL C. BLOMDAHL, Leif Jahn, Nirvan Bhattacharyya, Catherine Masoud, Kristi McPherson, Pearl Abue, Kanan Patel, Jordan Krechmer, Lea Hildebrandt Ruiz, Pawel K. Misztal, University of Texas at Austin

8AC.6  
11:00		 Iron(III)-Catalyzed Chemistry in Biomass Burning Organic Aerosol. KATHERINE HOPSTOCK, Hind Al-Abadleh, Sergey Nizkorodov, University of California, Irvine

8AC.7  
11:15		 Secondary Organic Aerosol Formation from in situ Cl Oxidation of Ambient Air in an Oil and Gas Production Region Using an Oxidation Flow Reactor. NIRVAN BHATTACHARYYA, Catherine Masoud, Kristi McPherson, Kanan Patel, Leif Jahn, Pearl Abue, Daniel C. Blomdahl, Anita Avery, William Brune, Pawel K. Misztal, Andrew Lambe, Lea Hildebrandt Ruiz, University of Texas at Austin

8AC.8  
11:15		 Peroxy Radical Isomerization of a Model Organic Compound Under Laboratory Chamber Conditions. MATTHEW GOSS, Victoria Barber, Yaowei Li, Alexander Zaytsev, Erik Helstrom, Francesca Majluf, Jordan Krechmer, Frank Keutsch, Jesse Kroll, MIT

8AC.9  
11:15		 The Impact of Temperature on Organic Peroxy Radical Isomerization and Aerosol Production. NADIA TAHSINI, Matthew Goss, Jesse Kroll, MIT

8AC.10  
11:30		 A Study on Elevated Concentration of Fine Particles at Urban and Agricultural Sites in Korea. JIHO JANG, Haebum Lee, Minhan Park, Joonwoo Kim, Nohhyeon Kwak, Taewoong Gong, Ilhwa Seo, Dahye Oh, Seunghye Lee, Kihong Park, Gwangju Institute of Science and Technology

8AC.11  
11:30		 Significant Contrasts in Aerosol Acidity between China and the United States. BINGQING ZHANG, Huizhong Shen, Pengfei Liu, Hongyu Guo, Yongtao Hu, Yilin Chen, Shaodong Xie, Ziyan Xi, T. Nash Skipper, Armistead G. Russell, Georgia Institute of Technology

8AC.12  
11:30		 Chemical Composition of Submicron Organic Aerosol in Rural Environment: A Long-Term Study. TOUQEER GILL, Julija Pauraite, Steigvilė Byčenkienė, Kristina Plauškaitė, SRI Center for Physical Sciences and Technology

8HA HEALTH RELATED AEROSOLS IV
Krystal Politt and Yu Feng, chairs

8HA.1  
10:45		 Characterizing Potash Rock Dust Generated from Full Scale Cutting Tests Performed with Three Different Radial Pick Wears. SYD SLOUKA, Muhammad Ishaq, Jamal Rostami, Jürgen Brune, Colorado School of Mines

8HA.2  
10:45		 Hygroscopicity and Shape Factor Measurements of Uric Acid Aerosol Towards the Treatment of Medical Conditions. DEWANSH RASTOGI, Kanishk Gohil, Chao Peng, Mingjin Tang, Akua Asa-Awuku, University of Maryland College Park

8HA.3  
10:45		 Particle and Toxin Filtration Efficiencies of Commercially Available Face Masks and Air Conditioning Filters to Reduce Exposure to and Health Impacts of Aerosolized Algal Toxins. CASSANDRA GASTON, Haley Royer, Raymond Leibensperger III, Michael Sheridan, Jiaming Hu, Kaycie Lanpher, Daniela Maizel, Helena Solo-Gabriele, Grace Zhai, Larry Brand, Alberto Caban-Martinez, Kimberly Popendorf, University of Miami

8HA.4  
11:00		 Investigation of Microscreen System for Fiber Length Classification. BON KI KU, Pramod Kulkarni, Centers for Disease Control and Prevention, NIOSH

8HA.5  
11:00		 Development of a Semi-automated Instrument to Measure the Cellular Reactive Oxygen Species (ROS) Activity of Ambient Particulate Matter. SUDHEER SALANA, Yixiang Wang, Joseph V Puthussery, Haoran Yu, Vishal Verma, University of Illinois at Urbana-Champaign

8HA.6  
11:00		 Assessing the Effectiveness of a Novel Negative-Pressure Particle Containment Device for Reducing Respiratory Particles during Intubation. MUCHUAN NIU, Liqiao Li, Haoxuan Chen, Peyton Tebon, John Shin, Tristan Grogan, Nir Hoftman, Yifang Zhu, University of California, Los Angeles

8HA.7  
11:15		 Linkage between Multiple Cellular Responses with Reactive Oxygen Species Production from Exposure to Biogenic and Anthropogenic Secondary Organic Aerosols. FOBANG LIU, Tianchang Xu, Nga Lee Ng, Hang Lu, Georgia Institute of Technology

8HA.8  
11:15		 Aerosol Composition and Chemistry in Electronic Cigarettes in Response to Coil Temperature and E-liquid Formulation. Yichen Li, Belinda Ortega, Amanda Burns, Lillian Tran, Karizza Abellar, Morgan Poindexter, Xiaohan Li, Brian Brandley, George Hodgin, Amy Madl, Kent Pinkerton, TRAN NGUYEN, University of California, Davis

8HA.9  
11:15		 Cokriging With a Low-cost Air Sensor Network to Estimate Spatial Variation of Brake and Tire-wear Related Heavy Metals and Reactive Oxygen Species in Southern California, United States. JONATHAN LIU, Irish del Rosario, Jonah Lipsitt, Farzan Oroumiyeh, Jiaqi Shen, Suzanne E. Paulson, Beate Ritz, Jason Su, Scott Weichenthal, Yifang Zhu, Michael Jerrett, University of California, Los Angeles

8HA.10  
11:30		 Health Risk Assessment and Chemical Characterization of Settling Dust Exposed to Children: A Case Study of Primary School at Karachi, Pakistan. SAIYADA MASOOD, Sumayya Saied, Farheen Anwar, Azhar Siddique, Kamran Khan, Haider Khwaja, Jinnah University for Women

8HA.11  
11:30		 Association of Short-Term Exposure to Air Pollution and Heart Rate Variability for a Healthy Cohort in a Highly Polluted City of Delhi. KASHISH JAIN, Gazala Habib, Nisar Ali Baig, Mohammad Yawar, Sandeep Singh, Siddharthan Deepti, Indian Institute of Technology, Delhi

8IM INSTRUMENTATION & METHODS V
Cari Dutcher and Shantanu Jathar, chairs

8IM.1  
10:45		 Excitation Emission Matrix Fluorescence Spectroscopy for Analysis of Reactive Oxygen Species from Particulate Matter Samples. ISHRAT SINGH, Jiayang He, Michael Paulsen, Igor Novosselov, Christopher Simpson, University of Washington

8IM.2  
10:45		 Development of an Inexpensive Spark-Induced Breakdown Spectroscopy Instrument for Measurements of Atmospheric Toxic Metals. HANYANG LI, Leonardo Mazzei, Christopher Wallis, Anthony S. Wexler, University of California, Davis

8IM.3  
10:45		 Enhanced Optical- and Atomic Force Microscopy- Photothermal Infrared and Raman Spectroscopy Enables Observation of Individual Ultrafine Aerosol Particles. YAO XIAO, Ziying Lei, Andrew Ault, University of Michigan

8IM.4  
11:00		 High-Throughput Microfluidic Device to Study Ice Nucleation Behavior. MARGARET HOUSE, Priyatanu Roy, Cari Dutcher, University of Minnesota

8IM.6  
11:00		 Measurement of the Rate and Controls of Small Particle Growth Using Ambient Air Captive Aerosol Chambers. ZIHAN ZHU, Xuanlin Du, Candice Sirmollo, Diana Ibarra-Gomez, Don Collins, University of California, Riverside

8IM.7  
11:15		 Design and Laboratory Evaluation of a New Flow Reactor to Study Aerosol Production and Processing through Gas- and Aqueous-phase Chemistry. NINGJIN XU, Don Collins, University of California, Riverside

8IM.8  
11:15		 New Insights into Complex Atmospheric Chromatograms Enabled by Advanced Data Processing Techniques. SUNGWOO KIM, Lindsay Yee, Allen Goldstein, Nathan Kreisberg, Susanne Hering, Gabriel Isaacman-VanWertz, Virginia Tech

8IM.9  
11:15		 Development and Performance Evaluation of “Chemspot” Instrument for the Characterization of Organic Aerosol. PURUSHOTTAM KUMAR, James Hurley, Nathan Kreisberg, Braden Stump, Susanne Hering, Pat Keady, Gabriel Isaacman-VanWertz, Virginia Tech

8IM.10  
11:30		 Optimization Study of a Thermal Ambient Desorption Source to Improve Sensitivity for Fragile Heritage Objects and Conservation. MICHAEL BUCHANAN, Xi Chen, Viraj Gandhi, Asher Newsome, Carlos Larriba-Andaluz, IUPUI

8IM.12  
11:30		 Numerical Modeling of the Transport and Fate of Ice Nucleating Particles Inside a Continuous Flow Diffusion Chamber. JORDAN SPENCER, Russell Perkins, Ezra Levin, Gavin McMeeking, Shantanu Jathar, Colorado State University

8SS SPECIAL SYMPOSIUM: AEROSOL STANDARDS I
Chris Zangmeister and Jason Olfert, chairs

8SS.1  
10:45		 CPMA-Electrometer Reference Mass Standard (CERMS): A Traceable Calibration Method for Aerosol Mass Concentration Instruments. GREGORY SMALLWOOD, Joel Corbin, Jason S. Olfert, Prem Lobo, National Research Council Canada

8SS.2  
10:45		 Optimized Sampling Settings and Reconstructions for Tandem Particle Mass Analyzer and Single Particle-Soot Photometer Measurements. Arash Naseri, Timothy Sipkens, Steven Rogak, JASON S. OLFERT, University of Alberta

8SS.3  
10:45		 Matrix-Based Inversion of Humidified Tandem DMA Data. MARKUS PETTERS, North Carolina State University

8SS.4  
11:00		 The Particles We Don’t Count Can Significantly Bias Optical Measurements. CHUN-NING MAO, Akua Asa-Awuku, James Radney, Christopher Zangmeister, University of Maryland

8SS.5  
11:00		 Calibration vs. Validation: Definitions, Best Practices, and Options in the Field. ANDREA J. TIWARI, Sebastian Schmitt, Torsten Tritscher, Juergen Spielvogel, Axel Zerrath, TSI Incorporated

8SS.6  
11:00		 Demonstration of a Calibration Standard for Aerosol Absorption Methods. CHRISTOPHER ZANGMEISTER, James Radney, National Institute of Standards and Technology

8SS.7  
11:15		 A Comprehensive Test Standard for Indoor Air Quality Low-Cost PM2.5 Sensors. WILTON MUI, Xiaobi M. Kuang, Sahil Bhandari, Vasileios Papapostolou, Andrea Polidori, South Coast Air Quality Management District

8SS.9  
11:15		 Performance of Correction Models for Accurate PM2.5 Estimation from Low-Cost Air Quality Sensor Data. DINUSHANI SENARATHNA, Vijay Kumar, Shantanu Sur, Suresh Dhaniyala, Supraja Gurajala, Sumona Mondal, Clarkson University, Potsdam

8SS.10  
11:30		 Ammonium Sulfate: Good for Optical Diagnostics but Not Quite Good Enough for Calibration. JAMES RADNEY, Christopher Zangmeister, Chun-Ning Mao, Akua Asa-Awuku, National Institute of Standards and Technology

8SS.11  
11:30		 Improvements to the Virkkula Filter Correction Algorithm for Measuring Carbonaceous Aerosol Optical Properties. THEO PAIK, Patrick Sheridan, Rajan K. Chakrabarty, Washington University in St. Louis

8UA URBAN AEROSOLS II
Faye McNeill and Dan Westervelt, chairs

8UA.1  
10:45		 New Application of Gaussian Mixture Regression to Bias-Correct Low Cost PM2.5 Monitoring Data in sub-Saharan Africa. Celeste McFarlane, DANIEL WESTERVELT, Columbia University

8UA.2  
10:45		 Evaluating the Influence of Residential Wood Burning PM2.5 Emissions throughout the South Coast Air Basin. XIANG LI, Melissa Maestas, Kyrstin Fornace, Scott A. Epstein, South Coast Air Quality Management District

8UA.3  
10:45		 Investigating PM2.5 Composition and Sources in the San Joaquin Valley of California Using a ToF-ACSM with the Capture Vaporizer. Peng Sun, Ryan Farley, Lijuan Li, Deepchandra Srivastava, Christopher Niedek, Jianjun Li, Ningxin Wang, Christopher Cappa, Sally Pusede, Zhenhong Yu, Philip Croteau, QI ZHANG, University of California, Davis

8UA.5  
11:00		 Spatial Characterization of the Composition and Sources of Submicron Aerosols in the Corpus Christi - San Antonio Area Based on Mobile Measurements. SHAN ZHOU, Fangzhou Guo, James Flynn, Sascha Usenko, Subin Yoon, Sergio Alvarez, Sujan Shrestha, Rebecca J. Sheesley, Manisha Mehra, Meghan C. Guagenti, Chun-Ying Chao, Robert Griffin, Rice University

8UA.6  
11:00		 Elucidating Sources of Midday Ultrafine Particles in a Major City. HOSNA MOVAHHEDINIA, Nathan Hilker, Cheol H. Jeong, Greg J. Evans, SOCAAR, University of Toronto

8UA.7  
11:15		 Trends of Submicron Atmospheric Aerosol Number Concentrations - Effect of Legislative Regulations and Economic Transformations. Nadežda Zíková, PETRA POKORNÁ, Zdenek Wagner, Jakub Ondráček, Philip K. Hopke, ICPF CAS, Prague, Czech Republic

8UA.8  
11:15		 Concentrations of Atmospheric VOCs Emitted from Fireworks in Southwest Mexico City Measured by a Real-time Vocus PTR-TOF-MS. MARGARITA PALACIOS-ARREOLA, Maribel Hernández-Camarillo, Jessica Ortiz-Gutiérrez, Pawel K. Misztal, Omar Amador-Muñoz, Universidad Nacional Autónoma de México

8UA.9  
11:15		 Characterization of Urban Aerosol Sulfate Sources in Summer Using High-Resolution Aerosol Mass Spectrometry. FANGZHOU GUO, Alexander Bui, Benjamin Schulze, Henry Wallace, Matthew H. Erickson, Sergio Alvarez, Sujan Shrestha, Subin Yoon, Rebecca J. Sheesley, Sascha Usenko, James Flynn, Robert Griffin, Rice University

8UA.10  
11:30		 Enhanced Aerosol Particle Growth Sustained by High Continental Chlorine Emission in India. Sachin S. Gunthe, PENGFEI LIU, Upasana Panda, Subha S. Raj, Amit Sharma, Eoghan Darbyshire, Ernesto Reyes Villegas, James Allan, Ying Chen, Xuan Wang, Shaojie Song, Mira L. Pöhlker, Liuhua Shi, Yu Wang, Snehitha M. Kommula, Tianjia Liu, R. Ravikrishna, Gordon McFiggans, Loretta Mickley, Scot T. Martin, Ulrich Pöschl, Meinrat O. Andreae, Hugh Coe, Georgia Institute of Technology

8UA.11  
11:30		 Trends, Performance, and In-Field Calibration for Low Cost Particulate Matter Sensors in West Bengal, India. V. FAYE MCNEILL, Anindita Dutta, Sandhya Sethuraman, Siddharth Nobell, Rakhi Basu, Sarbani Palit, Daniel Westervelt, Debasis Dasgupta, Shairik Dasgupta, Columbia University

8UA.12  
11:30		 Intra and Inter-Urban Variability in Carbonaceous Components of Fine Particulate Matter in Metropolitan Cities in India. PRINCE VIJAY, Shreya Dubey, Harish C Phuleria, Indian Institute of Technology Bombay

Wednesday 11:45 AM - 1:00 PM
Lunch Break



Wednesday 1:00 PM - 2:00 PM
Session 9: Platform



9AC AEROSOL CHEMISTRY IX
Andy Lambe and Albert Presto, chairs

9AC.1  
1:00		 Evidence that Halogen Bonding Catalyzes the Heterogeneous Chlorination of Alkene Aerosols. MEIRONG ZENG, Kevin R. Wilson, Lawrence Berkeley National Laboratory

9AC.2  
1:00		 Volatile Organic Acid Formation from the Aqueous and Heterogeneous Oxidation of Isoprene-Derived Organic Aerosol Compounds. James Cope, Karizza Abellar, Kelvin Bates, Xuan Fu, TRAN NGUYEN, University of California, Davis

9AC.3  
1:00		 Acid-Catalyzed Aging of Secondary Organic Aerosols. CYNTHIA WONG, Sergey Nizkorodov, University of California, Irvine

9AC.4  
1:15		 Evolving Toxicity Of Heterogeneously Oxidized Benzo[a]pyrene Aerosol Particles. AMY HRDINA, James Rowe, Simran Kaushal, Bevin Engelward, Jesse Kroll, MIT

9AC.5  
1:15		 Chemical Modification of Protein Exposed to Urban Air. RACHEL L. DAVEY, Erick Mattson, J. Alex Huffman, University of Denver

9AC.6  
1:15		 Quantitative Analysis on the Relationship between Aerosol Optical Properties and Chemical Composition in Urban Areas. PAULO ARTAXO, Djacinto Monteiro dos Santos, Bruno Backes Meller, Milena Ponczek, University of Sao Paulo

9AC.7  
1:30		 Observations of Oxidized and Reduced Nitrogen-Containing Gases and Particles via Liquid Chromatography at a Coastal Downwind Site Demonstrate the Prevalence of Reduced Nitrogen Molecular Features. DREW GENTNER, Jenna Ditto, Jo Machesky, Yale University

9AC.8  
1:30		 Synergistic Multiphase Chemistry of Isoprene Hydroxy Hydroperoxides (ISOPOOH) with Sulfur Dioxide in Acidic Sulfate Aerosols Leading to Secondary Inorganic and Organic Aerosol Formation. YUE ZHANG, Jin Yan, Yuzhi Chen, N. Cazimir Armstrong, Zhenfa Zhang, Avram Gold, Barbara Turpin, Jason Surratt, University of North Carolina at Chapel Hill

9AC.9  
1:30		 Secondary Organic Aerosol Formation and Chemical Composition from Biogenic Oxygenated Terpenes. FARZANEH KHALAJ, Véronique Perraud, Shan Gu, Celia Faiola, University of California, Irvine

9AC.10  
1:45		 Low Secondary Organic Aerosol Production from Oxygenated Volatile Chemical Products. MACKENZIE HUMES, Mingyi Wang, Sunhye Kim, Jo Machesky, Drew Gentner, Allen Robinson, Neil Donahue, Albert A. Presto, Carnegie Mellon University

9AC.11  
1:45		 Comprehensive Product Characterization in the OH Oxidation of Dimethyl Sulfide: Effects of RO2 Fates on Sulfur Distribution. QING YE, Matthew Goss, Jordan Krechmer, Yaowei Li, Francesca Majluf, Alexander Zaytsev, Joseph Roscioli, Manjula Canagaratna, Frank Keutsch, Colette L. Heald, Jesse Kroll, MIT

9IM INSTRUMENTATION & METHODS VI
Fan Mei and Markus Knoll, chairs

9IM.1  
1:00		 A Photothermal Sensor Concept for Black Carbon Mass Concentration Measurement. ULRICH RADESCHNIG, Markus Knoll, Benjamin Lang, Alexander Bergmann, Graz University of Technology

9IM.2  
1:00		 Performance of Black Carbon Instruments for Extractive Remote Emission Sensing. MARKUS KNOLL, Benjamin Lang, Alexander Bergmann, Graz University of Technology

9IM.3  
1:00		 Performance Assessment and Field Operation of a Portable Optical Particle Spectrometer (POPS). FAN MEI, Mikhail Pekour, Jason Tomlinson, Beat Schmid, Darielle Dexheimer, Casey Michael Longbottom, Pacific Northwest National Laboratory

9IM.4  
1:15		 A Simulated Respiratory System for Secondhand Smoke Generation and Aerosol Toxicological Studies. WEIXING HAO, Kapiamba Kashala Fabrice, Huang Yue-Wern, Yang Wang, Missouri University of Science and Technology

9IM.5  
1:15		 Using Soft Aerosolization and Sampling Techniques for the Conservation of Virus Infectivity during Airborne Exposure Experiments. GHISLAIN MOTOS, Kalliopi Violaki, Aline Schaub, Shannon David, Tamar Kohn, Athanasios Nenes, EPFL, LAPI, Lausanne

9IM.6  
1:15		 Size Distribution and Electrostatic Charge Measurements for Disinfectant Droplets of Electrosprays. QINGFENG CAO, Seong Chan Kim, Qisheng Ou, Chenxing Pei, David Y. H. Pui, University of Minnesota

9IM.7  
1:30		 Using CFD Method to Study the Particle Transportation Characteristics through a Critical Orifice. DA YANG, Suresh Dhaniyala, Pedro Campuzano-Jost, Jose-Luis Jimenez, Dongwook Kim, Hongyu Guo, Clarkson University

9IM.8  
1:30		 Evaluation of Electro-sprayer Performance by Using Fluorescent Tracer. DONGBIN KWAK, Seong Chan Kim, Thomas H. Kuehn, David Y. H. Pui, University of Minnesota

9IM.10  
1:45		 Characterization and Application of a Novel Wide-Range SMPS. Sebastian Schmitt, AXEL ZERRATH, Torsten Tritscher, Jacob Scheckman, Amine Koched, Juergen Spielvogel, Thomas Krinke, Oliver F. Bischof, TSI Incorporated

9IM.11  
1:45		 Development of a Humidified Single Scattering Albedometer (H-CAPS-PMssa). CHRISTIAN CARRICO, Tyler Capek, Kyle Gorkowski, Allison Aiken, Claudio Mazzoleni, Manvendra Dubey, New Mexico Institute of Mining and Technology

9IM.12  
1:45		 A Laminar Gas Inlet for High-speed Aircraft Sampling. DA YANG, Suresh Dhaniyala, Rainer Volkamer, Roy Lee III Mauldin, Clarkson University

9SS SPECIAL SYMPOSIUM: AEROSOL STANDARDS II
Jimmy Radney and Jim Smith, chairs

9SS.1  
1:00		 Improving Quantitative Analysis of Spark-Induced Breakdown Spectroscopy: Multivariate Calibration of Toxic Metal Particles Using Machine Learning. HANYANG LI, Leonardo Mazzei, Christopher Wallis, Anthony S. Wexler, University of California, Davis

9SS.2  
1:00		 Characterising the Silver Particle Generator: The New Silver Standard. MARTIN IRWIN, Jacob Swanson, Vincius Berger, Umesh Sonkamble, Adam M Boies, Hans-Joachim Schulz, Catalytic Instruments

9SS.3  
1:00		 Developing Particle Standards to Improve Measurement and Model Performance. JAMES SMITH, Nicole Riemer, Chongai Kuang, Manjula Canagaratna, Philip Croteau, Cassandra Gaston, Jose-Luis Jimenez, Murray Johnston, Arthur J. Sedlacek, Ernie R. Lewis, Christopher Cappa, Yan Feng, Rajan K. Chakrabarty, Markus Petters, Paul DeMott, University of California, Irvine

9SS.4  
1:15		 Characterization and Quantification of Novel Ambient Organic Aerosol Compounds using Machine Learning and the UCB-GLOBES Mass Spectral Database. EMILY FRANKLIN, Lindsay Yee, Robert Weber, Paul Grigas, Allen Goldstein, University of California, Berkeley

9SS.5  
1:15		 Optical and Physical Properties of Manufactured Carbon Black Particles. TIMOTHY ONASCH, Brian Heffernan, Richard Miake-Lye, Andrew Freedman, Aerodyne Research, Inc.

9SS.6  
1:15		 Evaluating the Consistency of All Submicron Aerosol Mass Measurements (Total and Speciated) for the NASA Atmospheric Tomography Aircraft Mission (ATom). HONGYU GUO, Pedro Campuzano-Jost, Benjamin A. Nault, Douglas Day, Jason Schroder, Jack Dibb, Eric Scheuer, Maximilian Dollner, Bernadett Weinzierl, Jose-Luis Jimenez, CIRES, University of Colorado, Boulder

9SS.8  
1:30		 Is It Possible to Overcome the Lack of Authentic Standards in Quantification of Biogenic Secondary Organic Aerosol Tracers? DANIEL BRYANT, Alfred Mayhew, Sri Hapsari Budisulistiorini, David Topping, Andrew Rickard, Jacqueline Hamilton, University of York

9SS.9  
1:30		 Predicting Glass Transition Temperature and Viscosity of Organic Molecules via Machine Learning and Molecular Embeddings. TOMMASO GALEAZZO, Manabu Shiraiwa, University of California, Irvine

9SW SPECIAL SYMPOSIUM: WILDFIRE AEROSOLS I
Amara Holder and Gregory Schill, chairs

9SW.1  
1:00		 Examination of Smoke Marker Ratios from Wildfires. AMY P. SULLIVAN, Sonia Kreidenweis, Emily Fischer, Bret Schichtel, Jeffrey Collett, Colorado State University

9SW.2  
1:00		 Photolysis of Biomass Burning Organic Aerosol, Chemical Transformations and Photo-Bleaching. RACHEL O'BRIEN, Hongmin Yu, Natalie Warren, Marley Adamek, Aron Jaffe, Christopher Lim, Christopher Cappa, Jesse Kroll, Carolyn Jordan, Bruce Anderson, William & Mary

9SW.3  
1:00		 Dilution and Photooxidation Driven Processes Explain the Evolution of Organic Aerosol in Wildfire Plumes. ALI AKHERATI, Charles He, Lauren A. Garofalo, Anna Hodshire, Delphine K. Farmer, Sonia Kreidenweis, Wade Permar, Lu Hu, Emily Fischer, Coty Jen, Allen Goldstein, Teresa Campos, Mike Reeves, Darin Toohey, Jeffrey R. Pierce, Shantanu Jathar, Colorado State University

9SW.4  
1:15		 Using Low-Cost Sensors to Trace Biomass Burning Aerosol Plumes from Wildfires in Southern California. DANIELLE ROCCO, Esther Morales, Jaebin Ju, Linh Luu, Daniel B. Curtis, California State University, Fullerton

9SW.5  
1:15		 Using Low-Cost Air Sensors to Assess Community Level PM Exposure from California Wildfires. AMBER KRAMER, Jonathan Liu, Liqiao Li, Yifang Zhu, University of California, Los Angeles

9SW.6  
1:15		 Use of a Low-Cost PM Sensor Network to Characterize the Impact of 2020 Washington Wildfire on Indoor Air Quality and Personal Exposure. CHING-HSUAN HUANG, Nanhsun Yuan, Jiayang He, Mei-Yu Liao, Selina Teng, Igor Novosselov, University of Washington

9SW.7  
1:30		 Effects of Wildfires on Outdoor Black Carbon Level to Indoor Air Quality. DARIA PASHNEVA, Julija Pauraite, Agnė Minderytė, Inga Garbarienė, Vadimas Dudoitis, Kristina Plauškaitė, Simonas Kecorius, Gediminas Mainelis, Jurgita Ovadnevaite, Steigvilė Byčenkienė, SRI Center for Physical Sciences and Technology

9SW.8  
1:30		 Quantifying the Impacts of Traffic-Related Air Pollution (TRAP) and Wildfire Smoke on Indoor and Outdoor Air Quality in Daycare Settings: A Pilot Study. Melanie MacArthur, Emily Peterson, Linda Dix-Cooper, NAOMI ZIMMERMAN, University of British Columbia

9SW.9  
1:30		 Toxic Emissions from Fires at the Wildland Urban Interface: Laboratory Measurement of Formaldehyde and Aerosol from Building Materials. KATHERINE BENEDICT, James E. Lee, Kyle Gorkowski, Manvendra Dubey, Allison Aiken, Los Alamos National Laboratory

9SW.10  
1:45		 Quantifying the Health Benefits of Respirators and Face Coverings to Mitigate Exposure to Wildfire Air Pollution. JACK KODROS, Kate O'Dell, Jon Samet, Christian L'Orange, Jeffrey R. Pierce, John Volckens, Colorado State University

9SW.11  
1:45		 2020 California Wildfire Smoke in New Mexico: Characterization and Toxicological Studies Reveal Signs of Neurological Aging and Inflammation. David Scieszka, Russell Hunter, Jessica Begay, Marsha Bitsui, Yan Lin, Joseph Galewsky, Masako Morishita, Zachary Klaver, James Wagner, Jack Harkema, Guy Herbert, Selita Lucas, Charlotte McVeigh, Alicia Bolt, Barry Bleske, Andrew Ottens, Haiwei Gu, Shahani Noor, MATTHEW CAMPEN, University of New Mexico

9SW.12  
1:45		 Assessing the Impact of Wildfire PM2.5 on Indoor Air Quality with Crowdsourced PurpleAir Sensor Data in California. YUTONG LIANG, Deep Sengupta, Mark Campmier, Joshua S. Apte, Allen Goldstein, University of California, Berkeley

9UA URBAN AEROSOLS III
Jean Rivera Rios and Marwa El-Sayed, chairs

9UA.1  
1:00		 Using Rain Washoff to Estimate Dry Deposition of Atmospheric Aerosols to Horizontal Urban Surfaces. ALEXANDER JOHNSON, Cliff Davidson, Syracuse University

9UA.2  
1:00		 Impact of Forest Belts on Reducing Desert Dust Concentration in Urban and Suburban Areas. OFIR VADAS, Boris Krasovitov, Andrew Fominykh, Avi Levy, Itzhak Katra, Ben-Gurion University of the Negev, Israel

9UA.3  
1:00		 The Impact of Sea Breeze and Precipitation on Particulate Matter Concentrations in Houston. CHUN-YING CHAO, Marina Karki, Wei Li, Yuxuan Wang, Robert Griffin, Rice University

9UA.5  
1:15		 The Relative Influence of Roadway and Harbor Particle Sources before and during COVID-19 Related Lockdown in Charleston, South Carolina. ROBY GREENWALD, Eleanor Clarke, Georgia State University

9UA.6  
1:15		 Ultrafine Particle Ground-Level Impacts during Aircraft Approach and Climb Out Operations at a Major Cargo Hub. MARYSSA LOEHR, Jay R. Turner, Washington University in St. Louis

9UA.7  
1:30		 Effect of the COVID-19 Pandemic on Aerosol Composition in Atlanta, GA. JEAN RIVERA-RIOS, Taekyu Joo, Tianchang Xu, Masayuki Takeuchi, Chris Peng, Leah Williams, Philip Croteau, John Jayne, Jennifer Kaiser, Nga Lee Ng, Georgia Institute of Technology

9UA.8  
1:30		 Assessing the Impact of Industrial Activities on Ambient Air Particulate Matter in East Java, Indonesia. MUHAYATUN SANTOSO, Philip K. Hopke, Diah Dwiana Lestiani, Endah Damastuti, Syukria Kurniawati, Didin Agustian Permadi, Arie Dipareza Syafei, Center for Applied Nuclear Science and Technology, BATAN

9UA.9  
1:30		 Contrasting the Impact of Traffic Changes on Air Quality During the COVID-19 Lockdowns in Maryland and Florida. KIARA MEGGITT-GOFF, Mariel Judd, Tate Grant, Scott Parr, Marwa El-Sayed, Embry-Riddle Aeronautical University

9UA.10  
1:45		 Multi-dimensional Characterization of Particulate Matter Low-cost Sensors in Florida. Jasper Bowles, Marc Compere, Kevin Adkins, MARWA EL-SAYED, Embry-Riddle Aeronautical University

9UA.11  
1:45		 Discovery of Atmospheric Microplastic Particles in Urban Emissions. ANA MORALES, Jay Tomlin, Christopher West, Yoorae Noh, Andrew Whelton, Alexander Laskin, Purdue University

9UA.12  
1:45		 Identifying Patterns and Sources of Urban Ultrafine Particulate Matter Using Mobile Measurements of Lung-Deposited Surface Area. RISHABH SHAH, Lauren Padilla, Daniel Peters, Megan Dupuy-Todd, Elizabeth Fonseca, Geoff Ma, Rod Jones, Jim Mills, Nick Martin, Ramon Alvarez, Environmental Defense Fund

Wednesday 2:00 PM - 4:00 PM
Chatroom Open