Instrumentation and Methods

A Bipolar Chemical Ionization Mass Spectrometer for the Detection of Aerosol Precursors. Markus Leiminger, Tobias Reinecke, MARKUS MUELLER, Tobias Fügenschuh, Zsolt Dányi, Alfons Jordan, Ionicon Analytik GmbH, Austria

A Community Ice Nucleation Cold Stage Instrument for Research and Teaching. MARKUS PETTERS, Sunandan Mahant, Shweta Yadav, Tommy Kessler, Eva Kjærgaard, Mads Jensen, Merete Bilde, North Carolina State University

A Continuous Flow Microfluidic Based Instrument for Measuring Ice Nucleating Particles. ETHAN EMERSON, Kate Patterson, Matt Freer, Ben Swanson, Andrew Metcalf, Russell Perkins, Jessie Creamean, Paul DeMott, Gavin McMeeking, Handix Scientific

A Cost-Effective Tabletop Chamber to Evaluate Cloud Microphysical and Optical Properties. JAKE ZENKER, Christian Pattyn, Lekha Patel, Jeremy Wright, Andres Sanchez, Brian Bentz, Andrew Glen, Sandia National Laboratories

A Flexible Tool for Retrieving and Working with PurpleAir Sensor Data. GEOFFREY SMITH, University of Georgia

A High Resolution Differential Mobility Analyzer with Extended Size Range for Viral Particle Studies. LUIS-JAVIER PEREZ-LORENZO, Jerzy Kozlowski, Juan Fernandez de la Mora, Yale University

A Low-Cost Particle Sensor Grid for Aerosol Wind Tunnel Studies. BOBBY GUILFOIL, Suresh Dhaniyala, Clarkson University

A Multi-angle Optical Particle Sizer to Improve In Situ PM2.5 Characterisation. SETH ARTHUR-HASTIE, Katherine Manfred, The University of York

A New Oxidation Flow Reactor for Secondary Aerosol Formation Studies. MARKUS NIKKA, Esa Luntta, Oskari Vainio, Erkki Lamminen, Anssi Arffman, Dekati Ltd.

A New Size-fractionated Liquid Collection of Viable Airborne Particles: The BioCascade Impactor. Stavros Amanatidis, Nathan Kreisberg, ARANTZAZU EIGUREN-FERNANDEZ, Aerosol Dynamics Inc.

A Novel Approach to Calibrate a Photoacoustic Absorption Spectrometer using Monodispersed Gold Nanoshell. YINGJIE SHEN, Shane Murphy, Matthew Burkhart, Gavin McMeeking, Bryan Rainwater, University of Wyoming

A Solution to New Mobility Particle Sizing Instrumentation and CCN Measurement using Scanning Mobility CCN Analysis (SMCA). Kanishk Gohil, Nahin Ferdousi, AKUA ASA-AWUKU, University of Maryland, College Park

A Stable Water Dispersed Calibrant for Refractory Black Carbon (rBC) in the Soot Particle Aerosol Mass Spectrometer (SP-AMS). ANITA AVERY, Edward Fortner, Leah Williams, Arthur J. Sedlacek, Shreya Joshi, Claudio Mazzoleni, Timothy Onasch, Aerodyne Research, Inc.

Activation of Single Aerosol Particles into Droplets with Immediate Capture into an Open Channel Microfluidic Device. WENDY FLORES-BRITO, Thomas Brubaker, Shelley Anna, Ryan Sullivan, Carnegie Mellon University

Advancements to the Handix Scientific Continuous Flow Diffusion Chamber. EZRA LEVIN, Gavin McMeeking, Russell Perkins, Matt Freer, Anna Hodshire, Anna Gannet Hallar, Tom Ramin, Handix Scientific

Aerosol Raman Spectrometer for Near Real-time Measurement of Aerosols with High Specificity in Workplace Atmospheres. Surendra Devarakonda, Orthodoxia Zervaki, PRAMOD KULKARNI, Centers for Disease Control and Prevention, NIOSH

An Approach for Characterizing the Transmission Efficiency of Charged Aerosols through Static Dissipative Tubes Subject to Favorable and Adverse Axial Electric Fields. FARNAZ KHOSRAVI, Francesco Carbone, University of Connecticut

An Automated Size and Time-resolved Aerosol Collector (STAC) and Integrated Sensors for Atmospheric Studies. ZEZHEN CHENG, Andrey Liyu, Darielle Dexheimer, Nurun Nahar Lata, Casey Michael Longbottom, Gourihar Kulkarni, Fan Mei, Swarup China, Pacific Northwest National Laboratory

An Inter-laboratory and Inter-instrumental Comparison of Elemental Loadings on PM2.5 Samples from the Chemical Speciation Network (CSN). COLLEEN MARCIEL ROSALES, Frank Weber, Tracy Dombek, Nicholas Spada, Nicole Hyslop, University of California, Davis

An Intercomparison of Instruments Measuring Carbonaceous Aerosol Light Absorption. AUGUST LI, Rajan K. Chakrabarty, Washington University in St. Louis

Assessing Air-Quality of Delware by Integarting Satellite Observations with Field Measurements. Al Alexis, Yue An, Zayna Juracka, Zakaria Juracka, Ryan Bischof, MOHAMMAD KHAN, Delaware State University

Assessment of Scanning Mobility Particle Sizer (SMPS) for Online Monitoring of Delivered Dose in an in Vitro Aerosol Exposure System. SRIPRIYA NANNU SHANKAR, Kiran Mital, Eric Le, Gregory S. Lewis, Arantzazu Eiguren-Fernandez, Tara Sabo-Attwood, Chang-Yu Wu, University of Florida

Calibration of a Single-Particle Soot Photometer with Different Soot Surrogates. JAMES HENRY, Dongli Wang, Andrew Metcalf, Clemson University

Calibration of the Aerodyne Aerosol Mass Spectrometer with Total Particulate Nitrogen and Carbon Measurements. ANN M. MIDDLEBROOK, Derek J. Price, Allison Piasecki, Rishabh U. Shah, Katherine L. Hayden, James B. Burkholder, James M. Roberts, NOAA ESRL CSL

Characterization of a New WCPC to Measure Nanometric Carbonaceous Aerosols Sampled from a Sooting Laminar Premixed Flame. FARNAZ KHOSRAVI, Arantzazu Eiguren-Fernandez, Gregory S. Lewis, Michel Attoui, Francesco Carbone, University of Connecticut

Characterization of Ambient Metal Particles in Real Time Using Atomic Emission Spectroscopy: Urban and Rural Environments. Hanyang Li, Leonardo Mazzei, Christopher Wallis, ANTHONY S. WEXLER, University of California, Davis

Characterization of an Augmented Version of the Printed Optical Particle Spectrometer for Integration into Multi-Instrument Aerosol Sampling Systems. SABIN KASPAROGLU, Mohammad Maksimul Islam, Nicholas Meskhidze, Markus Petters, North Carolina State University

Chemical Characterization of Gas-phase and Condensed Organics on a Molecular Composition Level by a Next Generation PTR-MS Instrument. MARKUS MUELLER, Tobias Reinecke, Zsolt Dányi, Markus Leiminger, Klaus Winkler, Todd Rogers, Alfons Jordan, IONICON Analytik GmbH., Innsbruck, Austria

Comparison of 100 nm Monodisperse Particle Size Measured by Four Accurate Methods. Kaleb Duelge, GEORGE MULHOLLAND, Vince Hackley, Natalia Farkas, John Kramar, Michael Zachariah, Keiji Takahata, Hiromu Sakurai, Kensei Ehara, National Institute of Standards and Technology

Comparison of Aerosol Loss Effects in a Continuous-Flow Atmospheric Chamber Under Different Operational Configurations. KATHERINE PIERRE-LOUIS, Erin O'Leary, Bruno Loyola San Martin, Joseph Woo, Lafayette College

Coupling of a Thermal-optical Carbon Analyser (TOCA) to High Resolution EI/PI Mass Spectrometry: Unravelling the Molecular Organic Signature and Oxidation State of Aerosol Samples. RALF ZIMMERMANN, Hendryk Czech, Kevin Schnepel, Marco Schmidt, Patrick Martens, Thorsten Streibel, Judith Chow, John Watson, Andreas Walte, Sven Ehlert, Helmholtz Zentrum München and University of Rostock

Culebra Aerosol Research Lidar Project, Description and First Results. JENS LAUTENBACH, Pedrina Terra, Josef Hoeffner, Arecibo Observatory - University of Central Florida

Dependence of Pulse Height Distribution on Particle Size, Composition, and Concentration for 1-7 nm Particles. DARREN CHENG, Chongai Kuang, Coty Jen, Carnegie Mellon University

Detection of Bioaerosol Based on Single Particle Differential Circular Polarization Scattering. YONG-LE PAN, Aimable Kalume, Jessica Arnold, Chuji Wang, Joshua Santarpia, U.S. Army Research Laboratory

Determining Glass Transition Temperatures of Individual Isoprene-Derived Secondary Organic Aerosol Particles. KATHERINE KOLOZSVARI, Yao Xiao, Alison Fankhauser, Jin Yan, Madeline Cooke, Cara Waters, Rebecca Parham, N. Cazimir Armstrong, Zhenfa Zhang, Avram Gold, Jason Surratt, Andrew Ault, University of Michigan

Development of a DART-HRMS Method to Characterize Chemical Composition of Microplastic Particles. EMILY HALPERN, Christopher P. West, Alexander Laskin, Purdue University

Development of a Machine-Learning Model for Prediction of the Aerosol Scattering Ångström Exponent (SÅE) from Purple Air Sensor Data. ZACHARY MCQUEEN, Ryan Poland, Geoffrey Smith, University of Georgia

Effects of Gas-Phase Components on Measurement of Secondary Organic Aerosol Size Distribution. YUANLONG HUANG, John Seinfeld, Richard Flagan, California Institute of Technology

Evaluating Quantification Capabilities of a New Higher-Resolution Aerosol Chemical Speciation Monitor for Long-Term Measurements of Non-Refractory Aerosol. BENJAMIN A. NAULT, Manjula Canagaratna, Philip Croteau, Edward Fortner, Andrew Lambe, Harald Stark, Donna Sueper, Leah Williams, Douglas Worsnop, John Jayne, Aerodyne Research, Inc.

Evaluation of a Condensation Particle Counter Method for Measuring Sulfuric Acid Vapor Concentrations. DOMINIC CASALNUOVO, Darren Cheng, Coty Jen, Carnegie Mellon University

Evaluation of Oligomeric Content in Secondary Organic Aerosol Using Matrix-Assisted Laser Desorption Mass Spectrometry (MALDI-MS). CARA WATERS, Madeline Cooke, Alison Fankhauser, Jin Yan, Rebecca Parham, Katherine Kolozsvari, Yao Xiao, N. Cazimir Armstrong, Zhenfa Zhang, Avram Gold, Jason Surratt, Andrew Ault, University of Michigan

External Proton Induced Gamma and X-Ray Emission (PIGE and PIXE) for Elemental Analysis of Dust Pollutants. GUNNAR BROWN, William Kacey, Graham Peaslee, University of Notre Dame

Field Demonstration of a Wearable Particulate Matter and Volatile Organic Compound Monitor. JESSICA TRYNER, Emilio Molina Rueda, Jane Andales, Casey Quinn, Christian L'Orange, Ellison Carter, John Volckens, Colorado State University

First Results from the Groundbased Fog and Aerosol Spectrometer. DARREL BAUMGARDNER, Dagen Hughes, Paul Zieger, Mike Carrabus, Almuth Neuberger, Droplet Measurement Technologies

High Chemical Resolution Analysis of Atmospheric Organic Aerosol Using a Novel Thermal Desorption Gas Chromatograph infiTOF Mass Spectrometer (TD-GC-infiTOF). MICHAEL WALKER, Siqin He, Minoru Kano, Brent Williams, Washington University in St. Louis

Improving Single-Particle Chemical Composition Analysis through Homogenization of an Excimer Ablation Laser Beam. WENDY FLORES-BRITO, Coty Jen, Ryan Sullivan, Carnegie Mellon University

Insoluble Residues from Isoprene-Derived Secondary Organic Aerosol Determined by Nanoparticle Tracking Analysis and Microspectroscopy Techniques. REBECCA PARHAM, Alison Fankhauser, Jia Shi, Madeline Cooke, Jin Yan, Cara Waters, Yao Xiao, Katherine Kolozsvari, N. Cazimir Armstrong, Zhenfa Zhang, Avram Gold, Jason Surratt, Andrew Ault, University of Michigan

Laboratory Determination of Gravimetric Correction Factors for Real-time Area Measurements of Electronic Cigarette Aerosols. SINAN SOUSAN, Jack Pender, Dillon Streuber, Meaghan Haley, Will Shingleton, Eric Soule, East Carolina University

Leveraging Machine Vision in a Liquid Level Controller for Long-Term Aerosol Capture with a Water Condensation Growth Tube Sampler. BRADEN STUMP, Panupoan Xiong, Dominick Heskett, Greg Brandes, Patricia Keady, Arantzazu Eiguren-Fernandez, Nathan Kreisberg, Aerosol Devices Inc.

Light Obscuration to Monitor Aerosol Delivery from Dry Powder Inhalers. SARA MALONEY, Lynn Davis, Anthony Hickey, RTI International

Low-Cost Black Carbon Detection from Beta Attenuation Monitors Using Image Reflectance Based Method. ABHISHEK ANAND, Albert Presto, Suryaprakash Kompalli, Eniola Ajiboye, Carnegie Mellon University

Measuring Size Distributions of Atmospheric Aerosols Using Natural Air Ions. YIRAN LI, Xiaotong Chen, Jingkun Jiang, Tsinghua University, China

Mobile Monitoring of PM2.5 - Insights from On-road Comparisons with MetOne BAM 1020 and Teledyne T640 FEMs. ANDREW WHITEHILL, Melissa Lunden, Brian LaFranchi, Paul Solomon, Surender Kaushik, United States Environmental Protection Agency

New Insights into the Composition of Organics in the Atmosphere Enabled by Advanced Processing Techniques for Existing Chromatographic Datasets. SUNGWOO KIM, Lindsay Yee, Allen Goldstein, Nathan Kreisberg, Susanne Hering, Gabriel Isaacman-VanWertz, Virginia Tech

Novel Laser Ionization Techniques for Single-particle Mass Spectrometry Reveal the Distribution of Key Compounds for Health Effects on Individual Particles. Johannes Passig, Julian Schade, Robert Irsig, Thomas Kröger-Badge, Sven Ehlert, Andreas Walte, RALF ZIMMERMANN, Rostock University and Photonion GmbH

Numerical Assessment of Particle Collection Efficiency of an Adaptor Connecting a Viable Virus Aerosol Sampler and a Point-of-Care Detector. AMIN SHIRKHANI, Sripriya Nannu Shankar, Carlos Mazanas, Z. Hugh Fan, Chang-Yu Wu, University of Florida

Performance Comparison of TSI's New Wide-Range and Established Long Differential Mobility Analyzer. Justin S. Koczak, ANDREA J. TIWARI, Torsten Tritscher, Sebastian H. Schmitt, Timothy Wright, Markus Petters, TSI Incorporated

Performance Evaluation of an Aerosol Collection Device for Bioaerosol Characterization. HUNTER HARDY, Kavindra Kumaragama, Suresh Dhaniyala, Clarkson University

Performance of Nephelometric and OPC-based Lower-Cost Monitors in Dusty and Desert-Influenced Environments. R. SUBRAMANIAN, Mohammed Ayoub, Shamjad Moosakutty, Rami Alfarra, Qatar Environment & Energy Research Institute

Performance of Plantower PMS Sensors and the Alphasense Optical Particle Counter for Measuring PM10 Concentration in the Laboratory and Field. KERRY KELLY, Kamaljeet Kaur, Ross Whitaker, University of Utah

Personal Exposure using Low Cost PM Sensors in Low Income Denver Communities. MARYAM ANIYA KHALILI, Nicholas Clements, Sophie Dolores Castillo, Dulce Gonzalez-Beltran, Allison Heckman, Tim Herwig, Marisa Westbrook, Valentina Serrano-Salomon, Omar Hammad, Esther Sullivan, Shivakant Mishra, Shelly L. Miller, University of Colorado Boulder

Portable, Low-cost Samplers for Distributed Sampling of Aerosols and Reactive Gases. JAMES HURLEY, Alejandra Caceres, Ksenia Onufrieva, Gabriel Isaacman-VanWertz, Virginia Tech

Practical Characterization of a Novel Moderated Water Condensation Growth Tube Bioaerosol Sampler. DOMINICK HESKETT, Tim Gordon, Braden Stump, Patricia Keady, Aerosol Devices Inc.

Precision and Accuracy of PM2.5 Monitors: Impacts on Air Sensor Evaluations. KAROLINE BARKJOHN, Andrea Clements, Amara Holder, Robert Vanderpool, Brett Gantt, Tim Hanley, US Environmental Protection Agency

Quantifying Residence Times in Neutralizers to Improve Temporal Resolution of Measurements. ROBERT T. NISHIDA, Mino Woo, Tyler J. Johnson, Jason S. Olfert, University of Alberta

Quantitative Chemical Assay of Nanogram-Level PM Using Aerosol Mass Spectrometry Coupled with an Isotopically Labeled Internal Standard: Application to Samples Collected from Uncrewed Arial Systems. CHRISTOPHER NIEDEK, Fan Mei, Maria Zawadowicz, Zihua Zhu, Beat Schmid, Qi Zhang, University of California, Davis

Real-Time Non-invasive Measurements of Aerosol Flow in the Laboratory. JULIE PONGETTI, Nick Collings, Jonathan Symonds, Chris Nickolaus, Cambustion Ltd

Response of Two Total Carbon Analyzers to Various Aerosols. JOEL CORBIN, Daniel Clavel, Timothy Sipkens, Gregory Smallwood, National Research Council Canada

Scattering Channel Truncation in CAPS PMssa Monitor. Brian Heffernan, Stephen Jones, Fred Bacon, Andrew Freedman, TIMOTHY ONASCH, Aerodyne Research, Inc.

Simultaneous Scaling of Spatiotemporal Representativeness for Concentration Mapping and Microphysical Properties Measurement of Aerosols. Daniel Cantin, OVIDIU PANCRATI, Denis Panneton, Pascal Dufour, Jonathan Fortin, Daniel Landry, Jean-François Cormier, François Châteauneuf, INO

Surface Enhanced Optical- and Atomic Force Microscope- Photothermal Infrared and Raman Microspectroscopy Enables Observation of Individual Ultrafine Aerosol Particles. YAO XIAO, Ziying Lei, Andrew Ault, University of Michigan

The Effect of Filter Storage Techniques on Thermal and Optical Degradation of Combustion Aerosol Samples. CHASE GLENN, Omar El Hajj, Kruthika Kumar, Rawad Saleh, University of Georgia

Towards Minimizing Turbulence in Aircraft Inlets. NAGARAJAN RADHAKRISHNAN, Suresh Dhaniyala, Clarkson university

Understanding the Source Components Captured by the Purple Air Network. VIJAY KUMAR, Dinushani Senarathna, Supraja Gurajala, William Olsen, Shantanu Sur, Sumona Mondal, Suresh Dhaniyala, Clarkson University

Using the Aerodynamic Aerosol Classifier (AAC) as a Low-Pass Separator. JULIE PONGETTI, Chris Nickolaus, Jonathan Symonds, Cambustion Ltd

Validation and Demonstration of the “Chemspot” Instrument for Measuring Aerosol Composition. PURUSHOTTAM KUMAR, James Hurley, Nathan Kreisberg, Braden Stump, Pat Keady, Susanne Hering, Andrew Grieshop, Gabriel Isaacman-VanWertz, Virginia Tech

Where'd Those Particles Come From? Impactor Non-idealities, Multiple Charging, and Optical Measurement Biases. JAMES RADNEY, Chun-Ning Mao, Akua Asa-Awuku, Christopher Zangmeister, National Institute of Standards and Technology