Instrumentation and Methods

A Beta Attenuation System for Mass Determination of Filter-Based Aerosol Samples. JULIAN PROBSDORFER, Emily Macqueene, Jack Kodros, Christian L'Orange, John Volckens, Colorado State University

A Compact Aerosol Mobility Imager for Instantaneous Aerosol Size Distribution Measurements. JIAOSHI ZHANG, Jing Li, Xiaoyu Chen, Steven Spielman, Susanne Hering, Jian Wang, Washington University in St. Louis

A Data Analysis Pipeline for Identification of Untargeted GC-EI-MS Spectra. DEBORAH F. MCGLYNN, Lindsay Yee, Lewis Geer, Yuri Mirokhin, Dmitrii Tchekhovskoi, Coty Jen, Allen Goldstein, Anthony J. Kearsley, Stephen E. Stein, National Institute of Standards and Technology

A New Spin on Colorimetric Measurement of Aerosol pH Using Aerosol Water Uptake. CARA WATERS, Ali Alotbi, Katherine Kolozsvari, Andrew Ault, University of Michigan

A Novel Automated Sampler Designed for Improved Spatiotemporal Resolution of Volatile Organic Compound Measurements. JACKSON RYAN, Paulus Bauer, Ana Luisa Santiago O. Vilela, Alejandra Hernández-Terán, María Rebolleda-Gómez, Celia Faiola, University of California, Irvine

A Semi-Analytical Model of the Scanning Transfer Function for Radial-Flow Differential Mobility Analyzers. STAVROS AMANATIDIS, Yuanlong Huang, Richard Flagan, Aerosol Dynamics Inc.

A Wide Range, Multi-Angle, Light Scattering Device to Probe Hazardous Aerosol Particles. RAIYA EBINI, Joshua Hubbard, Christopher M. Sorensen, Alex Brown, Joseph Zigmond, Sandia National Laboratories

Advancing Low-cost Air Quality Monitor Calibration with Artificial Intelligence. SINAN SOUSAN, Rui Wu, Ciprian Popoviciu, Sarah Fresquez, Yoo Min Park, Department of Public Health, East Carolina University

Advancing Planetary Climate Science with the Planetary Cloud Aerosols Research Facility (PCARF). MIKE PAUKEN, Luca Valdarno, Marcel Veismann, Dejian Fu, Joseph Salazar, Richard Flagan, Will Cantrell, Jet Propulsion Laboratory, Caltech

An Aerosol Spectrometer Combination for Measurement across the Sub- and Super-Micrometer Regime. JUSTIN HAMLIN, Raymond Leibensperger III, Jena Herbst, Meinrat O. Andreae, Kimberly Prather, University of California, San Diego

An Online Condensation-based Technique to Measure the True Volume and Density of Aerosol Particles. CYPRIEN JOURDAIN, Julie Pongetti, Jonathan Symonds, Adam M Boies, University of Cambridge

Analytical Method for Quantification of Airborne Respirable Crystalline Silica Using Raman Spectroscopy. VASILEIA VOGIAZI, Chen Wang, Pramod Kulkarni, Centers for Disease Control and Prevention, NIOSH

Atmospheric Pressure Environmental (APE) Chamber for Chemical Imaging of Aerosol Samples Under Mimic Real-World Condition. ZEZHEN CHENG, Yuzhi Chen, Alexander Smith, Andrey Liyu, Ashfiqur Rahman, Carter Bracken, Swarup China, Vimal Kumar Balasubramanian, Arunima Bhattacharjee, Nurun Nahar Lata, Qian Zhao, Alla Zelenyuk, Daniel Perea, Pacific Northwest National Laboratory

Automated Droplet Freezing Assay System: Investigating Soil and Biogenic Particle Ice Formation. NURUN NAHAR LATA, Gourihar Kulkarni, Sarah Williams, Mickey Rogers, Swarup China, Pacific Northwest National Laboratory

Bidimensional Charge Distribution of Compact and Fractal Aerosols in a Unipolar Charger. NISHAN SAPKOTA, Timothy Sipkens, Rym Mehri, Steven Rogak, Joel Corbin, University of British Columbia

Boosting the Detection of Flame-formed Sub-5nm Materials by Operating the Saturator Inlet of a Water Condensation Particle Counter (WCPC) with Different Condensing Fluids. Farnaz Khosravi, Arantzazu Eiguren-Fernandez, Gregory S. Lewis, FRANCESCO CARBONE, University of Connecticut

Broadband Light Scattering and Cavity Ring-Down Spectroscopy Measurements on Single Light-Absorbing Aerosol Particles. AIDAN RAFFERTY, Andrew J. Orr-Ewing, Jonathan P. Reid, Michael Cotterell, University of Oxford

Carbon Quantum Dots for Direct Measurement of the pH of Aerosol Particles. KOMAL JASWAL, Victoria Adekunle, Miriam Freedman, The Pennsylvania State University

Characterization and Performance of a Low-Cost, Open Source Condensation Particle Counter (CPC). AARON COLLINS, OpenAeros LLC

Characterizing Metal Particles Emitted from Aircraft Engines. BENJAMIN A. NAULT, Peter F. DeCarlo, Richard Miake-Lye, Edward Fortner, Richard Moore, Steven Baughcum, Johns Hopkins University

Characterizing the Influence of Particle Coating and Volatility on the Differential Loading Compensation Parameter from a DualSpot® Aethalometer. RYAN POLAND, John Allen, Zachary McQueen, Rawad Saleh, Geoffrey Smith, University of Georgia

Chemical Characterization of Aerosol Droplets via Droplet Assisted Ionization Mass Spectrometry. JOSHUA HARRISON, Thomas Hilditch, Kelvin Risby, Jim Walker, Bryan R. Bzdek, University of Bristol

Comparison of Physics-Based and Machine Learning Based Approach for Calibration of Low-cost Particulate Matter Sensors. Brijal Prajapati, MANORANJAN SAHU, Chandra Venkataraman, Pratim Biswas, Indian Institute of Technology Bombay

Contrasting the Composition of Urban and Remote Fine Aerosols Using Single Particle Inductively Coupled Plasma Time-of-Flight Mass Spectrometry. PATRICK HAYES, Kevin Wilkinson, James King, Yannick Tardif, Léa Richard, Daniel Bellamy, Alisée Dourlent, Nicole Trieu, Katia Iatariene, Houssame-Eddine Ahabchane, Universite de Montreal

Coupling of Photoionization Mass Spectrometry to Thermal Optical Carbon Analysis (EC/OC-Measurement) for Rapid PM-Characterization. Hendryk Czech, Patrick Martens, Paul Kösling, Marco Schmidt, Christopher Rüger, Thorsten Streibel, Sven Ehlert, Andreas Walte, Martin Rigler, Johannes Passig, RALF ZIMMERMANN, Mass Spectrometry Centre;Rostock University/Helmholtz Munich

Design and Development of a Field-Portable Tandem Raman and Elemental Aerosol Spectrometer (TREAS) for Near Real-time Aerosol Measurement. Nicholas Pugh, ORTHODOXIA ZERVAKI, Kabir Rishi, Pramod Kulkarni, Centers for Disease Control and Prevention, NIOSH

Designing a Cloud Chamber and Digital Twin Simulation for Studying Aerosol-Warm Cloud Interactions. KYLE GORKOWSKI, Nevil Franco, Hannah Brink, Liam Wedell, Matthew Nelson, Katherine Benedict, Los Alamos National Laboratory

Development and Testing of Methods for the Continuous Measurement of the Concentration and Composition of PM0.1. Georgia Argyropoulou, Kalliopi Florou, Andreas Aktypis, Angeliki Matrali, Damianos Pavlidis, SPYROS Ν. PANDIS, University of Patras

Development of a Custom Aerosol Test Chamber and Stand-Off Chemical Aerosol System for Detection and Classification. STEVEN PULLINS, Meredith Melendez, David Alburty, Darren Radke, Adam Luxon, Jonathan Mueller, Garrett Wendell, Miles Egan, Seth Henshaw, Deborah Hunka, Leidos

Development of a Low-cost Aerosol Concentrator for Bioaerosol Sampling. Francisco Romay, RYNE JUIDICI, Aaron Collins, David Y. H. Pui, University of Minnesota

Effects of Particle Phase State on the Measurement of Sea Spray Aerosol Composition Using Extractive Electrospray Ionization Mass Spectrometry. SAMANTHA KRUSE, Paul Tumminello, Alexia Moore, Christopher Lee, Kimberly Prather, Jonathan Slade, University of California San Diego

Enhanced Chamber Wall Loss of Intermediate Volatility Polar Organic Compounds at High Water Vapor Concentrations. KENNETH S. DOCHERTY, Diya Yang, Olson David, Mohammed Jaoui, Michael Lewandowski, U.S. Environmental Protection Agency

Enhancing the Measurement Accuracy of Integrated Photoacoustic Nephelometers to Better Characterize Infrared Optical Properties of Stratospheric Aerosol Injection Candidates. PRABHAV UPADHYAY, Taveen Kapoor, Benjamin Sumlin, Rajan K. Chakrabarty, Washington University in St. Louis

Evaluating ‘Good Enough’ - An introduction to US EPA Air Sensors NSIM Guidelines and Assessment of Its Utility for Research and Community Air Monitoring Applications. EBEN CROSS, David Hagan, David McClosky, Adriana Peña, Shivang Agarwal, Kirsten Koehler, Peter F. DeCarlo, QuantAQ, Inc.

Evaluating a Cloud Chamber in Controlling Coagulation and Wall Losses at High Particle Loads. NEVIL FRANCO, Kyle Gorkowski, Katherine Benedict, Los Alamos National Laboratory

Evaluating Air Quality Using Low-Cost Sensor and Satellite Data at Schools in a Semi-rural US-Mexico Border Region Area of South Texas, USA. KABIR BAHADUR SHAH, Sai Deepak Pinakana, Amit U. Raysoni, The University of Texas Rio Grande Valley

Exploring the Relationship Between Filter Loading Effect and Aethalometer Multiple Scattering Enhancement Factor C in an Urban Background Site. ASTA GREGORIČ, Luca Ferrero, Matic Ivančič, Irena Ježek Brecelj, Bálint Alföldy, Martin Rigler, Aerosol d.o.o.

Exposure to Crystalline Silica Nanoparticles during Fabrication of Natural and Engineered Stones. KABIR RISHI, Bon Ki Ku, Jianqi Wang, Chen Wang, Alan Dozier, Vasileia Vogiazi, Orthodoxia Zervaki, Pramod Kulkarni, Centers for Disease Control and Prevention, NIOSH

Field Evaluation of a Community Condensation Particle Counter for Ultrafine Particle Monitoring. SUSANNE HERING, Arantzazu Eiguren-Fernandez, David Pariseau, Judith Chow, John Watson, Xiaoliang Wang, Aerosol Dynamics Inc.

Flow-Through Integrating Cavity Optical Absorption Spectrometer for In-Situ Cloud Water Condensed Phase Composition Measurement: Design Constraints and Initial Validation. BENJAMIN LANG, Alexander Bergmann, Graz University of Technology

Frequency-Resolved Single-Particle Photothermal Interferometry. FELIX STOLLBERGER, Michael Gleichweit, Ruth Signorell, Alexander Bergmann, Graz University of Technology

Identifying Photocharring of Single Particles in an Aerosol Raman Hyperspectral Imaging Instrument. MAXWELL FREEMAN, J. Alex Huffman, University of Denver

Improvements in Airborne Aerosol and Trace Gas Measurement Capabilities on the University of Wyoming’s Next Generation King Air Research Aircraft. ANNA ROBERTSON, Eric Beamesderfer, Matthew Burkhart, Bart Geerts, Nicholas Mahon, University of Wyoming

Improvements in Portable Gas Chromatography-Mass Spectrometry for Volatile Organic Compounds Detection. SABIN KASPAROGLU, Anthony S. Wexler, University of California, Davis

Improving PurpleAir PM2.5 Sensor Accuracy in Cold Conditions: Developing Tailored Correction Factors. JENNO JOSEPH-LEENOSE-HELEN, Srijan Aggarwal, Raghu Betha, Dominique Pride, Alana Vilagi, University of Alaska - Fairbanks

Instrumentation Shortcomings in Asthma Studies: Implications for Accurate Particle Measurement and Health Outcomes. DAVID WOOLSEY, Mohammadreza Khani, AirSpeQ

Integrating Data from Satellites and Low-Cost Sensors to Investigate Stubble Burning Effects on Air Quality in Lower Rio Grande Valley, Texas, USA. SAI DEEPAK PINAKANA, Amit U. Raysoni, Alqamah Sayeed, Pawan Gupta, The University of Texas Rio Grande Valley

Investigating Flow Characteristics and Particle Sampling in Drone Aerodynamics: A CFD Simulation Study. SREEKESH KOOKKAL, Suresh Dhaniyala, Clarkson University

Investigations of Particle Hygroscopicity using High Purity Aerosolization and Condensation Particle Counting. DEREK OBERREIT, Michael Walker, Jikku Thomas, Kanomax FMT, Inc.

Low-Cost, In-Situ Surface Tension Measurements of Hanging Aerosol Mimic Droplets under Controlled Atmospheric Conditions. BRUNO LOYOLA SAN MARTIN, Michael Haines, Tzu-An Kuan, Joseph Woo, Lafayette College

Machine Learning to Identify and Define Clusters of Aerosols According to Their Optical Properties. Zachary McQueen, Ryan Poland, GEOFFREY SMITH, University of Georgia

Measuring Surface Tension of Single Aerosol Particles Using Electrodeformation. THOMAS PRESTON, McGill University

Measuring the Charging Efficiency of Unipolar Charger in Electrical Low-Pressure Impactor for Soot Aggregates. NISHAN SAPKOTA, Timothy Sipkens, Mang Guan, Steven Rogak, University of British Columbia

Measuring VOCs and HOMs with a Single Instrument: Comprehensive Analysis of Complex Gas Mixtures by Multi-Pressure Chemical Ionization Mass Spectrometry. HENNING FINKENZELLER, Aleksei Shcherbinin, Jyri Mikkilä, Jussi Kontro, Netta Vinkvist, Juha Kangasluoma, Matti P. Rissanen, University of Helsinki

Method for Optimization of Experiment Design in Aerosol Size Distribution Measurement Using Multi-Angle Light Scattering. KIRAN SEETALA, Adam Hammond, Sandia National Laboratories

Method Optimization for the Measurement of Aerosol Particle Size Characterization from Heated Tobacco Products. CHIH-HSIANG CHIEN, Matt Melvin, Weiling Li, Yezdi Pithawalla, Altria Client Services LLC

Monitoring and Diagnostic Tools for Aerosol Beams from Different Aerodynamic Lenses. DONGWOOK KIM, Pedro Campuzano-Jost, Hongyu Guo, Leah Williams, Philip Croteau, John Jayne, Douglas Worsnop, Jose-Luis Jimenez, University of Colorado, Boulder

More Information from an Optical Particle Counter. DANIEL MURPHY, NOAA CSL

Near-UV (365 and 405 nm) CAPS PMssa Monitors for the In Situ Measurement of Particle Optical Properties. ZACHARY PAYNE, Benjamin Moul, Stephen Jones, Andrew Freedman, Timothy Onasch, Aerodyne Research, Inc.

Near-UV CAPS PMSSA Monitors for the In Situ Measurement of Particle Optical Properties. Zachary Payne, Benjamin Moul, Stephen Jones, Andrew Freedman, TIMOTHY ONASCH, Aerodyne Research, Inc.

Optimization of Liquid Level in a Condensation-based Bioaerosol Sampler for Efficient Sampling using Machine Learning. Xiaohan Li, MOHAMMAD WASHEEM, Amin Shirkhani, Matthew D. Jansen, William B. Vass, Xing He, Bian Jiang, Z. Hugh Fan, Chang-Yu Wu, University of Miami

Optimizing Design Parameters for Miniaturized Condensation Particle Counters: Insights into Ultrafine Particle Detection. MOLLY J. HAUGEN, Shaamrit Balendra, Ashkay Kale, Lee Weller, Adam M Boies, University of Cambridge

Organic Nitrogen Ions in Aerosol Mass Spectrometry and Implications for Source Apportionment and Understanding SOA Chemical Processing. JUSTIN TROUSDELL, Christopher Niedek, Weiqi Xu, Yele Sun, Xinlei Ge, Qi Zhang, University of California, Davis

Particle Sizing by Novel Scattered Light-Fluctuation Analysis. STEPHAN GROSSE, Lukas Oeser, Lars Hillemann, J. Lienig, ToPAS Inc., Minneapolis, USA

Particles in the Upper Troposphere and Lower Stratosphere (PUTLS): Observations of Aerosol Microphysical Properties. MATTHEW BROWN, Luke Ziemba, NASA

Practical Considerations for Tandem Aerosol Classifier Measurements: The Effect of Scan Time, Resolution, and Calibration on Effective Density Accuracy. Morteza Kiasadegh, Timothy Sipkens, Jonathan Symonds, JASON S. OLFERT, University of Alberta

Predictive Analytics of Black Carbon in High-Concentration Region Using Machine Learning Models. PRATIMA GUPTA, Pau Ferrer-Cid, Jose M. Barcelo-Ordinasb, Jorge Garcia-Vidal, Mar Viana, Mira L. Pöhlker, Ajit Ahlawat, Indian Institute of Technology Delhi

Quantifying the Contributions from Multiply Charged Particles to Improve Calibration Procedures for the ACSM. Ernie R. Lewis, Arthur J. Sedlacek, Ogochukwu Enekwizu, Maria Zawadowicz, AMIE DOBRACKI, Brookhaven National Laboratory

Rapid and Sensitive Chemical Analysis of Individual Picolitre Droplets by Mass Spectrometry. JIM WALKER, Bryan R. Bzdek, University of Bristol

SMPS and DMA Calibration with Size-Certified Silver Aerosols from the Silver Particle Generator (SPG). Tobias Hammer, MOHSEN KAZEMIMANESH, Hans-Joachim Schulz, Konstantina Vasilatou, National Physical Laboratory

The Condensation Particle Counter For Rapid Atmospheric Measurements (CPC FARM): Instrument Description and Field Results. DARREN CHENG, Stavros Amanatidis, Gregory S. Lewis, Coty Jen, Carnegie Mellon University

Trace Aerosol Signature Detection and Classification Using Standoff Quantum Cascade Laser Absorption Spectroscopy: Preliminary Forward Modeling Results from the IARPA PICARD Program. MILES EGAN, Justin Maughan, Seth Henshaw, Jonathan Mueller, Adam Luxon, Vanessa Lynch, Steven Pullins, Garrett Wendell, David Alburty, Darren Radke, Meredith Melendez, Deborah Hunka, Leidos

Transmission Efficiency of Two Pumped Counterflow Virtual Impactors of the Same Kind for Cloud-aerosol Interactions Studies. SHREYA JOSHI, Lynn Mazzoleni, Will Cantrell, Raymond Shaw, Simeon Schum, Thusitha Divisekara, Ian Helman, Gourihar Kulkarni, Timothy Onasch, Kyle Gorkowski, Arthur J. Sedlacek, Ogochukwu Enekwizu, Claudio Mazzoleni, Michigan Technological University

Using Machine Learning Models to Enhance Chemical Characterization from TOF-ACSM Mass Spectra. NA MAO, Manjula Canagaratna, Nga Lee Ng, Satoshi Takahama, Ann M. Dillner, University of California, Davis

Validity for Detecting DPF Failure by Measuring Particle Number in Tailpipe. Kenta Hasegawa, HIROYUKI YAMADA, Tokyo Denki University Gradulate School