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Evaluation of a non-dispersive infrared spectrometer for quantifying organic and elemental carbon in diesel particulate matter Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-08 David A. Parks, Yongli Zhao, Peter R. Griffiths, Arthur L. Miller
Diesel particulate matter (DPM) is a common and well-known health hazard in the mining environment. The regulatory method for monitoring both the organic and elemental carbon (OC, EC) portions of D...
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Development of an openable small cyclone for atmospheric particulate matter sampling for toxicological experiments Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-08 Chiharu Nishita-Hara, Kohei Nakano, Ayumi Iwata, Muhammad Aiman bin Mohd Nor, Tatsuhiro Mori, Hyunwoo Youn, Tomoaki Okuda
The chemical components and mechanisms underlying the toxicity and adverse health effects of particulate matter (PM) in the atmosphere have not been fully elucidated. After designing a small, opena...
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Morphological classification of fine particles in transmission electron microscopy images by using pre-trained convolution neural networks Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-08 Jasmita Khadgi, Haebum Lee, Juchan Seo, Jin-hyuk Hong, Kihong Park
Morphological information on fine particles is essential for understanding their transport behavior in the ambient atmosphere and in the human respiratory system. More than 3000 transmission electr...
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Inactivation of virions in host particles in air using 222- and 254-nm UV: Dependence of shielding on particle size and UV wavelength Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-08 Steven C. Hill, David C. Doughty, Daniel W. Mackowski
UV light at 222 nm inactivates SARS-CoV-2 virions at intensities appearing to be benign to skin and eyes. It can disinfect air without requiring protection of persons from UV as is needed at longer...
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Aerosol deposition in 90-degree bends: An enhanced empirical equation and a design concept of reducing losses Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-04 Shibo Wang, Chih-Wei Lin, Sheng-Hsiu Huang, Chih-Chieh Chen
Accurate theoretical calculations of particle deposition in a 90° bend rely on understanding its flow field characteristics. However, given the complexity of the flow patterns within the bend, most...
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First complex refractive indices retrieval from FIR to UV: Application to kaolinite particles Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-04 Maria Chehab, Hervé Herbin, Alexandre Deguine, Sylvie Gosselin, Valentine Bizet, Denis Petitprez
Knowledge of the optical properties, in particular the complex refractive indices (CRI), of aerosols is crucial to better quantify their impact on the environment from remote sensing techniques. Ho...
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Effects of heating power and nicotine concentration on aerosol size distribution of a vaping device Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-01 Mohammad Shajid Rahman, Kaniz Ronak Sultana, Yoka Cho, Alex Yumshtyk, Tarik Kaya, Edgar Matida
Vaping devices with a reduced heating power have the potential to generate less harmful chemicals. This leads the importance of examining particle size distribution (PSD) of undiluted aerosol at re...
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Measurement of sub-4 nm particle emission from FFF-3D printing with the TSI Nano Enhancer and the Airmodus Particle Size Magnifier Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-03-01 Chi-Long Tang, Stefan Seeger
The emission of ultrafine particles from small desktop Fused Filament Fabrication (FFF) 3D printers has been frequently investigated in the past years. However, the vast majority of FFF emission an...
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Prediction of the temporal evolution of microparticle resuspension in ventilated duct during a fan start by a Monte Carlo model Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-21 Jesica Benito, Félicie Theron, Laurence Le Coq, Rodolfo Uñac, Ana Vidales
When a fan is turned on in a Heating Ventilating and Air Conditioning (HVAC) duct, it first exhibits a transient airflow period (acceleration regime) which is then followed by a constant airflow (s...
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Verifying the viable particle counts of biofluorescent particle counters by using inkjet aerosol generators Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-22 Kenjiro Iida, Takuji Ikeda, Takashi Minakami, Hiromu Sakurai
A method was developed to verify the viable counts of BioTrakTM (TSI Model 9510-BD) without using test bacteria. In this method, an inkjet aerosol generator (IAG) was used to deliver a known number...
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Air change rate and SARS-CoV-2 exposure in hospitals and residences: A meta-analysis Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-16 Yuetong Zhang, Sripriya Nannu Shankar, William B. Vass, John A. Lednicky, Z. Hugh Fan, Duzgun Agdas, Robert Makuch, Chang-Yu Wu
As COVID-19 swept across the globe, increased ventilation and implementation of air cleaning were emphasized by the US CDC and WHO as important strategies to reduce the risk of inhalation exposure ...
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Design and validation of a wind tunnel for viral aerosol filtration testing Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-12 Vincent Brochu, Gabriel St-Onge, Nathalie Turgeon, Marc Veillette, Mathieu Olivier, Caroline Duchaine
Face masks were heavily used during the SARS-CoV-2 pandemic to reduce the transmission of the virus by aerosols. These facial barriers are tested in laboratory against particles and bacteria, but t...
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Measurement of 100 nm monodisperse particles by four Accurate methods: Traceability and uncertainty Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-12 George W. Mulholland, Kaleb J. Duelge, Vincent A. Hackley, Natalia Farkas, John A. Kramar, Michael R. Zachariah, Keiji Takahata, Hiromu Sakurai, Kensei Ehara
Accurate measurements of particle diameter are necessary for quantitative characterization of key aerosol properties including the Cunningham slip correction factor, charging probability, diffusion...
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Estimation of microbial inhalation exposure and prediction of microbial concentrations in rail transportation facilities during the COVID-19 pandemic Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-07 Bong Gu Lee, Yea Joon Kim, Joo Eun Shim, Hyesoo Lee, Min-Kyeong Yeo
Transportation facilities are characterized by high population density and significant passenger turnover. These environments provide optimal conditions for the transmission of airborne microorgani...
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Adhesion force analysis for prevention of particle resuspension in multiplexed inertial coalescence filters Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-02-07 Rawand M. Rasheed, John M. Lentz, Irfan M. Zobayed, Zhen Liu, Anoop Rajappan, Damian Gonzalez, Daniel J. Preston
Fine airborne particles (<10 µm) pose challenges for engineered systems, human health, and environmental pollution. This work investigates the relative influences of van der Waals and capillary adh...
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The BioCascade impactor: A novel device for direct collection of size-fractionated bioaerosols into liquid medium Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-25 Yuqiao Chen, Jiayi Chen, Sripriya Nannu Shankar, Stavros Amanatidis, Arantzazu Eiguren-Fernandez, Nathan Kreisberg, Steven Spielman, John A. Lednicky, Chang-Yu Wu
The ability to collect size-fractionated airborne particles that contain viable bacteria and fungi directly into liquid medium while also maintaining their viability is critical for assessing expos...
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Understanding the performance of pressurized metered dose inhalers formulated with low Global warming potential propellants Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Hui Wang, Jasmim Leal, Mani Ordoubadi, Zahra Minootan, Kellisa Lachacz, Nicholas Carrigy, David Lechuga-Ballesteros, Reinhard Vehring
Switching to low-global warming potential (GWP) propellants for pressurized metered dose inhalers (pMDIs) is crucial in current inhalation product development, as it is crucial to safeguard patient...
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Size-dependent depositional loss of inorganic, organic, and mixed composition particles to Teflon chamber walls under various environmental and chemical conditions Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Adrianne Nakagawa, Kelvin H. Bates, Tran B. Nguyen
Corrections for first-order particle losses to Teflon chamber walls are important sources of uncertainty in experimental studies of particle formation and aging. Particle size distributions and env...
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Exploring the discrepancies between SMPS and AMS measurements in secondary organic aerosol formation experiments Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Damianos Pavlidis, Dontavious J. Sippial, Kalliopi Florou, Evangelia Kostenidou, Spyros N. Pandis
Inconsistencies have often been observed between the measurements obtained from the Aerosol Mass Spectrometer (AMS) and the Scanning Mobility Particle Sizer (SMPS) during laboratory experiments foc...
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Study on the behavior of particle impaction on single droplet in reactor container Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Junhong Ji, Sitong Zhang, Deqiang Li, Jing Xie, Yaoyuan Zhang
Numerical simulations of the aerosol particles flow past a spherical droplet are carried out to determine the effect of particles Stokes number of 0.001 to 10 and the Reynolds number of 100 to 1000...
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Gas-particle partitioning process contributes more to nitrate dominated air pollution than oxidation process in northern China Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Xiao Tian, Haofei Yu, Yuting Wei, Zongbo Shi, Yinchang Feng, Linlin Zhang, Guoliang Shi
Nitrate has been recognized as a key aerosol component in regional haze formation in China. However, reducing nitrate aerosol concentration remains a major challenge. Generally, the formation of pa...
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Study of influencing factors of magnetic air filters applied in subway systems Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Yulin Zhu, Xiaofeng Li
In the subway system, a high concentration of iron particles can cause significant damage to human health, and magnetic filters that efficiently filter out iron particles have attracted considerabl...
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Evaluation and calibration of low-cost particulate matter sensors for respirable coal mine dust monitoring Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 Zikang Feng, Lina Zheng, Xuehan Zhang, Jia Liu, Ning Xue, Mengmeng Wang
Prolonged exposure to coal mine dust has led to various respiratory diseases among coal mine workers. Accurate monitoring of personal exposure concentration is crucial for evaluating dust exposure ...
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Development of the Reiss theory for binary homogeneous nucleation of aerosols Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-24 M. S. Veshchunov
The Reiss theory for binary homogeneous nucleation in binary vapor mixtures is critically analyzed and further developed. Based on the analysis of phase space trajectories in the supercritical zone...
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Experimental characterization of particle wall-loss behaviors in UCR dual-90m3 Teflon chambers Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-17 Chen Le, Ningjin Xu, Qi Li, Don R. Collins, David R. Cocker III
Particle size dependent wall-loss rates vary widely between Teflon environmental chambers. For instance, the UCR/CE-CERT dual-90 m3 collapsible Teflon chambers (UCR collapsible chamber) measured pa...
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The microphysics of surrogates of exhaled aerosols from the upper respiratory tract Aerosol Sci. Technol. (IF 5.2) Pub Date : 2024-01-17 Jianghan Tian, Robert W. Alexander, Daniel A. Hardy, Thomas G. Hilditch, Henry P. Oswin, Allen E. Haddrell, Jonathan P. Reid
Airborne transmission plays a significant role in the transmission of respiratory diseases such as COVID-19, for which the respiratory aerosol droplets are responsible for the transportation of pot...
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Fundamentals of low-cost aerosol sensor design and operation Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 James Ouimette, W. Patrick Arnott, Philip Laven, Richard Whitwell, Nagarajan Radhakrishnan, Suresh Dhaniyala, Michael Sandink, Jessica Tryner, John Volckens
Most evaluations of low-cost aerosol sensors have focused on their measurement bias compared to regulatory monitors. Few evaluations have applied fundamental principles of aerosol science to increa...
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Aerosol photoemission as a versatile tool for nanoparticle surface investigations: Evaluation of metal oxide formation and surface properties of multi-component particles Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Vinzent Olszok, Philipp Rembe, Alfred P. Weber
The presented work discusses an analytical setup that is capable of detecting surface alterations of aerosol nanoparticles. Utilizing the photoelectric effect, Aerosol Photoemission Spectroscopy (A...
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A comparison of real-world outdoor aging of Bacillus thuringiensis bioaerosols using Goldberg rotating drums and synthetic spider webs in Conroe, Texas Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Sean M. Kinahan, Gabriel A. Lucero, Matthew S. Tezak, Kevin Hommema, Paul Gemmer, Eric Scribben, Thomas Hawkyard, Don R. Collins, Kevin K. Crown, Joshua L. Santarpia
There are two predominant methods for understanding and studying bioaerosol aging: capture on microfibers, and Goldberg rotating drums. There are advantages and disadvantages to each approach depen...
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Insights into the potential pathogenic bacteria and their interactions with meteorology and atmospheric pollution conditions examined during summer and winter in Xi’an, China Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Liu Yang, Yiming Yang, Junqiang Wei, Tao Wang, Lizhen Li, Zhenxing Shen
Bioaerosols can influence the atmospheric environment and human health. In this study, we investigated the diurnal variations of bioaerosols and the bacterial communities in PM2.5 during summer and...
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Rapid bioaerosol detection by measuring circular intensity differential scattering (CIDS) from single flowing through particle Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Yong-Le Pan, Aimable Kalume, Leonid Beresnev, Chuji Wang, Sean Kinahan, Danielle N. Rivera, Kevin K. Crown, Joshua Santarpia
We present an advanced optical method to measure the phase function of circular intensity differential scattering (CIDS), i.e., the normalized Mueller matrix element -S14/S11, from individual singl...
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Electrospray synthesis and in-situ sizing of nanoparticulate CsH2PO4 Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Áron Varga, Andrew J. Downard, Vanessa Evoen, Konstantinos P. Giapis, Richard C. Flagan, Sossina M. Haile
Nanometer-sized particles of the solid acid electrolyte material CsH2PO4 have been prepared by electrospray synthesis. Using a differential mobility analyzer to provide real-time particle-size info...
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Effects of ventilation rate and social distancing on risk of transmission of disease: a numerical study using Eulerian-Lagrangian method Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Wonseok Oh, Ryozo Ooka, Hideki Kikumoto, Sihwan Lee
This study utilized the Eulerian-Lagrangian method to investigate the risk of transmission of disease by tracking particles generated through coughing. The effects of ventilation rates (0.5, 5.0, a...
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The filtration efficiency of surgical masks for expiratory aerosol and droplets generated by vocal exercises Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-19 Alicja Szczepanska, Joshua Harrison, Brian Saccente-Kennedy, Justice Archer, Natalie A. Watson, Christopher M. Orton, William J. Browne, Ruth Epstein, James D. Calder, Pallav L. Shah, Declan Costello, Bryan R. Bzdek, Jonathan P. Reid
Transmission of an airborne disease can occur when an individual exhales respiratory particles that contain infectious pathogens. Surgical face masks are often used to reduce the amount of respirat...
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Direct Influence of Aerosol Particles on Cavity Enhanced Spectroscopy: Modeling and first experimental results Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-11 Felix W. Stollberger, Michael J. Gleichweit, Gregory David, Ruth Signorell, Alexander Bergmann
This article presents the first experimental analysis of the influence of single, micrometer-sized aerosol particles on the reflectivity of a resonant Fabry-Pérot etalon (FPE). The results are pres...
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Theoretical characterization of the kinetics of the multiphase ozonolysis of an aqueous maleic acid droplet Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-12-04 Rawan AbouHaidar, Denis Duflot, Céline Toubin
Understanding the heterogeneous reactions and transformations between organic particles and gas–phase oxidants, such as ozone, within atmospheric aqueous phases is of crucial importance. However, i...
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Proceedings from a special symposium and panel session on the aerosol science of infectious diseases: what we learned and what we still need to know Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Justin Taylor, Shanna Ratnesar-Shumate, Krystal Pollitt, J. Alex Huffman
Published in Aerosol Science and Technology (Vol. 57, No. 12, 2023)
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Multi-modal chemical characterization of highly viscous submicrometer organic particles Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Ana C. Morales, Brianna N. Peterson, Steven A. L. Sharpe, Shelby M. Huston, Jay M. Tomlin, Felipe A. Rivera-Adorno, Ryan C. Moffet, Alla Zelenyuk, Alexander Laskin
Distinguishing highly viscous organic particles within complex mixtures of atmospheric aerosol and accurate descriptions of their composition, size distributions, and mixing states are challenges a...
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Impact of test methodology on the efficacy of triethylene glycol (Grignard Pure) against bacteriophage MS2 Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Katherine M. Ratliff, Lukas Oudejans, John Archer, Worth Calfee, Jerome U. Gilberry, David Adam Hook, William E. Schoppman, Robert W. Yaga, Lance Brooks, Shawn Ryan
The COVID-19 pandemic has raised interest in using chemical air treatments as part of a strategy to reduce the risk of disease transmission, but more information is needed to characterize their eff...
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The volatility of pollen extracts and their main constituents in aerosolized form via the integrated volume method (IVM) and the volatility basis set (VBS) Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Kevin Axelrod, Chiranjivi Bhattarai, Palina Bahdanovich, Vera Samburova, Andrey Y. Khlystov
The volatility of organic aerosol in the atmosphere is an important quality that determines the aerosol/gas partitioning of compounds in the atmosphere and thus influences their ability to particip...
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Volatile propellant droplet evaporation measurements in metered dose inhaler sprays Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Daniel J. Duke, Harry N. Scott, Anesu J. Kusangaya, Alan Kastengren, Jan Ilavsky, Brandon Sforzo, Benjamin Myatt, Phil Cocks, Stephen Stein, Paul Young, Damon Honnery
Many aerosol products rely on the rapid vaporization of volatile propellants to produce a fine spray. In the simplest case, these are binary mixtures of propellant and a delivered product which und...
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Comparing respiratory aerosol emissions between children and adults during sustained phonation Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Mahender Singh Rawat, Mehtap Agirsoy, Dinushani Senarathna, Byron D. Erath, Tanvir Ahmed, Sumona Mondal, Andrea R. Ferro
Respiratory aerosols arise due to bronchial fluid film bursting within the pulmonary tract, the vibration of the vocal folds during phonation, and articulation of the tongue/lips/teeth. We expect r...
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Optimization of sampling conditions to minimize sampling errors of both PM2.5 mass and its semi-volatile inorganic ion concentrations Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-11-10 Thi-Cuc Le, Pallavi Gajanan Barhate, Kai-Jing Zhen, Manisha Mishra, David. Y. H. Pui, Chuen-Jinn Tsai
The accurate measurement of PM2.5 and its inorganic matters (IMs) is crucial for compliance monitoring and understanding particle formation. However, semi-volatile IMs (SVIMs) like NH4+, NO3−, and ...
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Estimating viscosity of individual substrate-deposited particles from measurements of their height-to-width ratios Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-10-16 Felipe A. Rivera-Adorno, Jay M. Tomlin, Matthew Fraund, Erick Morgan, Mikhail Laskin, Ryan Moffet, Alexander Laskin
Airborne particles alter the radiative forcing of climate and have further consequences on air visibility, atmospheric chemistry, and human health. Recent studies reported the existence of highly v...
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Probing the pH dependence of brown carbon formation: Insights from laboratory studies on aerosol particles and bulk phase solutions Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-10-10 Kevin T. Jansen, Margaret A. Tolbert
Light-absorbing organic aerosol (brown carbon, BrC) can have a significant impact on the radiative balance of the Earth’s atmosphere. However there are still substantial uncertainties regarding the...
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Effects of volatility, viscosity, and non-ideality on particle–particle mixing timescales of secondary organic aerosols Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-26 Meredith Schervish, Neil M Donahue, Manabu Shiraiwa
Different populations of aerosol are constantly mixed throughout the atmosphere. Large-scale models often assume no particle–particle mixing or fast mixing among aerosol populations, so that they s...
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Influence of electrostatic collection on scavenging of submicron-sized aerosols by cloud droplets and raindrops Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-14 Vladan Vučković, Dragana Vujović, Darko Savić
We explicitly calculate the efficiency with which submicron-sized aerosol particles (APs) with a diameter smaller than 0.2 μm collide with cloud droplets and raindrops in air due to individual and ...
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Performance evaluation of different low-cost DIY air cleaner configurations Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-14 Nirmala T. Myers, Kevin P. Dillon, Taewon T. Han, Gediminas Mainelis
Do-it-yourself (DIY) air cleaners have been proposed as an affordable alternative to expensive portable HEPA air cleaners; however, their performance data is still limited. This study evaluated the...
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A machine learning based approach to solve the aerosol dynamics coagulation model Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-14 Onochie Okonkwo, Rahul Patel, Ravindra Gudi, Pratim Biswas
Solving aerosol dynamic models accurately to obtain the size distribution function is often computationally expensive. Conventional artificial neural network (ANN) models offer an alternative proce...
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Detection of sub-5nm naturally charged carbonaceous materials from a sooting laminar premixed flame by a water condensation Particle Counter (WCPC) enhanced by a Di-Ethylene Glycol (DEG) saturator inlet Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-07 Farnaz Khosravi, Gregory S. Lewis, Michel Attoui, Arantza Eiguren-Fernandez, Francesco Carbone
Combustion is one of the major contributors to air pollution and Condensation Particle Counters (CPCs) provide effective monitoring of atmospheric aerosols since they can detect both charged and ne...
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Detection and isolation of infectious SARS-CoV-2 omicron subvariants collected from residential settings Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-07 William B. Vass, Sripriya Nannu Shankar, John A. Lednicky, Yang Yang, Carlos Manzanas, Yuetong Zhang, Jessica Boyette, Jiayi Chen, Yuqiao Chen, Amin Shirkhani, Mo Washeem, Z. Hugh Fan, Arantzazu Eiguren-Fernandez, Antarpreet Jutla, Chang-Yu Wu
Airborne transmission of infectious (viable) SARS-CoV-2 is increasingly accepted as the primary manner by which the virus is spread from person to person. Risk of exposure to airborne virus is high...
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Deposition of 11C-radiolabeled nicotine-containing aerosol in an airway cast model using positron emission tomography (PET) Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-06 Jed E. Rose, Arkadiusz K. Kuczaj, Alexey G. Mukhin, Julia Hoeng, Kiran Kumar Solingapuram Sai
We recently developed an in vitro system for quantification of deposited mass of labeled aerosol constituents in the human airway under realistic inhalation conditions including temperature and hum...
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Chemical characterization of biomass pyrolysis oil facilitated by aerosolization and size separation Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-01 Emily R. Halpern, Christopher P. West, Anusha P.S. Hettiyadura, Andrew Darmody, Jillian K. Johnson, Kuangnan Qian, Alexander Laskin
Bio-oils are a promising renewable and carbon-neutral hydrocarbon material that can become a new energy source. Bio-oil mixtures have complex multi-component composition consisting of the pyrolysis...
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Application of a physical model of the human mouth and throat to study the complex dynamics of inhaled aerosols Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-09-01 Nicolas D. Castro, Qiang Wang, Jingjie Zhang, Weiling Li, Yezdi B. Pithawalla, David B. Kane, Michael J. Oldham, Ali A. Rostami
A unique adult human mouth/throat physical model has been developed to study e-cigarette aerosol dynamics during inhalation. The 3D printed physical model was created from the CT scan of a 28 yr. o...
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Field observations of aerosol particles in aircraft takeoff and taxiing plumes: A case study at Kobe Airport, Japan Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-08-30 Nobuyuki Takegawa
Aerosol particles emitted from aircraft were measured in the vicinity of Kobe Airport (UKB), an offshore airport in Japan, in the spring (May) and fall (October–November) of 2021. The observation s...
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Exploring the potential for continuous measurement of ultrafine particle mass concentration (PM0.1) based on measurements of particle number concentration above 50 nm (N50) Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-08-29 Georgia Argyropoulou, David Patoulias, Spyros N. Pandis
The real-time automatic and accurate measurement of the mass of ultrafine particles is especially challenging due to their low concentrations and the interferences of larger particles. This work in...
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Pulsed laser heating of diesel engine and turbojet combustor soot: Changes in nanostructure and implications Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-08-22 Randy L. Vander Wal, Madhu Singh, William Bachalo, Greg Payne, Julien Manin, Robert Howard
Abstract Carbonaceous particulate produced by a diesel engine and turbojet engine combustor are analyzed by transmission electron microscopy (TEM) for differences in nanostructure before and after pulsed laser annealing. Soot is examined between low/high diesel engine torque and low/high turbojet engine thrust. Small differences in nascent nanostructure are magnified by the action of high-temperature
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Characteristics of Scanning Flow Condensation Particle Counter (SFCPC): A rapid approach for retrieving hygroscopicity and chemical composition of sub-10 nm aerosol particles Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-08-22 Kewei Zhang, Zhengning Xu, Xiangyu Pei, Fei Zhang, Hang Su, Yafang Cheng, Zhibin Wang
Abstract Chemical composition of sub-10 nm particles is crucial for understanding the atmospheric new particle formation (NPF) and subsequent particle growth. However, very limited chemical information is available in this diameter range due to the high technical requirements. In this work, we proposed a new operation mode of water-based condensation particle counter, which was termed as Scanning Flow
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Filtration efficiency of woven metal fiber filter for aerosol generated by plasma torch metal cutting Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-08-10 Min-Ho Lee, Hee Kwon Ku, Hyunjin Boo, Jonghyeon Kim, Geundong Song, Deokhee Lee, Kaphyun Yoo, Byung Gi Park
Abstract An air conditioning unit with the HEPA filter should be operated in the dismantling workspace of nuclear power plants because of massive release of radioactive aerosols due to radioactively contaminated metal cutting. The HEPA filter has a good performance against nano- or micro-sized aerosols but is frequently replaced to maintain the filtration efficiency in the workplace. A woven metal
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Development of drone-based filter sampling system for carbonaceous aerosol analysis using thermal–optical transmittance method Aerosol Sci. Technol. (IF 5.2) Pub Date : 2023-07-20 Jaebeom Park, Dong-Bin Kwak, Minwoo Baek, Songhui Lee, Woo Young Kim, Ki Ae Kim, Ji Yi Lee, Kang-Ho Ahn, Handol Lee
Abstract Application of a drone-based, high-volume (38 L min−1) sampling system developed for time-resolved monitoring of elemental and organic carbon (EC and OC) is demonstrated in this study. Filter samples collected by the samplers were analyzed by a laboratory-based, thermal-optical transmittance (TOT) method of the National Institute for Occupational Safety and Health using a Sunset Laboratory