Articles | Volume 14, issue 6
Atmos. Meas. Tech., 14, 4461–4470, 2021
https://doi.org/10.5194/amt-14-4461-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue: Simulation chambers as tools in atmospheric research (AMT/ACP/GMD...
Atmos. Meas. Tech., 14, 4461–4470, 2021
https://doi.org/10.5194/amt-14-4461-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article 17 Jun 2021
Research article | 17 Jun 2021
Comparative characterization of the performance of bio-aerosol nebulizers in connection with atmospheric simulation chambers
Silvia G. Danelli et al.
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Lucía Caudillo, Birte Rörup, Martin Heinritzi, Guillaume Marie, Mario Simon, Andrea C. Wagner, Tatjana Müller, Manuel Granzin, Antonio Amorim, Farnoush Ataei, Rima Baalbaki, Barbara Bertozzi, Zoé Brasseur, Randall Chiu, Biwu Chu, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Loïc Gonzalez Carracedo, Xu-Cheng He, Victoria Hofbauer, Weimeng Kong, Houssni Lamkaddam, Chuan P. Lee, Brandon Lopez, Naser G. A. Mahfouz, Vladimir Makhmutov, Hanna E. Manninen, Ruby Marten, Dario Massabò, Roy L. Mauldin, Bernhard Mentler, Ugo Molteni, Antti Onnela, Joschka Pfeifer, Maxim Philippov, Ana A. Piedehierro, Meredith Schervish, Wiebke Scholz, Benjamin Schulze, Jiali Shen, Dominik Stolzenburg, Yuri Stozhkov, Mihnea Surdu, Christian Tauber, Yee Jun Tham, Ping Tian, António Tomé, Steffen Vogt, Mingyi Wang, Dongyu S. Wang, Stefan K. Weber, André Welti, Wang Yonghong, Wu Yusheng, Marcel Zauner-Wieczorek, Urs Baltensperger, Imad El Haddad, Richard C. Flagan, Armin Hansel, Kristina Höhler, Jasper Kirkby, Markku Kulmala, Katrianne Lehtipalo, Ottmar Möhler, Harald Saathoff, Rainer Volkamer, Paul M. Winkler, Neil M. Donahue, Andreas Kürten, and Joachim Curtius
Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2021-512, https://doi.org/10.5194/acp-2021-512, 2021
Preprint under review for ACP
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We performed experiments in the CLOUD chamber at CERN at low temperatures to simulate new particle formation in the upper free troposphere (at −30 °C and −50 °C). We measured particle and gas phase and found that most of the compounds that are present in the gas phase are detected as well in the particle phase. The major compounds in the particles are C8-10 and C18-20. Specifically, we showed that C5 and C15 compounds are detected in a mixed system with isoprene and α-pinene at −30 °C, 20 % RH.
Vera Bernardoni, Luca Ferrero, Ezio Bolzacchini, Alice Corina Forello, Asta Gregorič, Dario Massabò, Griša Močnik, Paolo Prati, Martin Rigler, Luca Santagostini, Francesca Soldan, Sara Valentini, Gianluigi Valli, and Roberta Vecchi
Atmos. Meas. Tech., 14, 2919–2940, https://doi.org/10.5194/amt-14-2919-2021, https://doi.org/10.5194/amt-14-2919-2021, 2021
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An instrument-dependent wavelength-independent parameter (C) is often used to face multiple-scattering issues affecting aerosol light absorption measurements by Aethalometers. Instead, we determined multi-wavelength C by comparison with absorption measurements of samples collected in parallel performed by an instrument developed in-house. Considering C wavelength dependence, harmonized results were obtained applying source and component apportionment models to data from different Aethalometers.
Giovanni Baccolo, Edyta Łokas, Paweł Gaca, Dario Massabò, Roberto Ambrosini, Roberto S. Azzoni, Caroline Clason, Biagio Di Mauro, Andrea Franzetti, Massimiliano Nastasi, Michele Prata, Paolo Prati, Ezio Previtali, Barbara Delmonte, and Valter Maggi
The Cryosphere, 14, 657–672, https://doi.org/10.5194/tc-14-657-2020, https://doi.org/10.5194/tc-14-657-2020, 2020
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Cryoconite is the sediment found on the surface of glaciers. The paper presents cryoconite as an environmental matrix able to accumulate natural and artificial radioactivity with unprecedented efficiency. Only samples from sites where nuclear accidents and explosions occurred present a stronger radioactive contamination. The peculiarities of glacial environments are responsible for this extreme feature, making cryoconite a useful tool tool for the monitoring of environmental radioactivity.
Alice Corina Forello, Vera Bernardoni, Giulia Calzolai, Franco Lucarelli, Dario Massabò, Silvia Nava, Rosaria Erika Pileci, Paolo Prati, Sara Valentini, Gianluigi Valli, and Roberta Vecchi
Atmos. Chem. Phys., 19, 11235–11252, https://doi.org/10.5194/acp-19-11235-2019, https://doi.org/10.5194/acp-19-11235-2019, 2019
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A new approach coupling aerosol chemical and optical properties in one source apportionment study is proposed. Besides a more robust identification of sources, it was possible to retrieve a source-specific absorption Ångström exponent and a mass absorption cross section at different wavelengths as well as optical apportionment. This piece of information can be very useful for formulating strategies for pollutant abatement to improve air quality and to face climate challenges.
Dario Massabò, Alessandro Altomari, Virginia Vernocchi, and Paolo Prati
Atmos. Meas. Tech., 12, 3173–3182, https://doi.org/10.5194/amt-12-3173-2019, https://doi.org/10.5194/amt-12-3173-2019, 2019
Nivedita K. Kumar, Joel C. Corbin, Emily A. Bruns, Dario Massabó, Jay G. Slowik, Luka Drinovec, Griša Močnik, Paolo Prati, Athanasia Vlachou, Urs Baltensperger, Martin Gysel, Imad El-Haddad, and André S. H. Prévôt
Atmos. Chem. Phys., 18, 17843–17861, https://doi.org/10.5194/acp-18-17843-2018, https://doi.org/10.5194/acp-18-17843-2018, 2018
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It is clear that considerable uncertainties still exist in understanding the magnitude of aerosol absorption on a global scale and its contribution to global warming. This manuscript provides a comprehensive assessment of the optical absorption by organic aerosols (brown carbon) from residential wood combustion as a function of atmospheric aging.
Dario Massabò, Silvia Giulia Danelli, Paolo Brotto, Antonio Comite, Camilla Costa, Andrea Di Cesare, Jean François Doussin, Federico Ferraro, Paola Formenti, Elena Gatta, Laura Negretti, Maddalena Oliva, Franco Parodi, Luigi Vezzulli, and Paolo Prati
Atmos. Meas. Tech., 11, 5885–5900, https://doi.org/10.5194/amt-11-5885-2018, https://doi.org/10.5194/amt-11-5885-2018, 2018
Jorge Saturno, Christopher Pöhlker, Dario Massabò, Joel Brito, Samara Carbone, Yafang Cheng, Xuguang Chi, Florian Ditas, Isabella Hrabě de Angelis, Daniel Morán-Zuloaga, Mira L. Pöhlker, Luciana V. Rizzo, David Walter, Qiaoqiao Wang, Paulo Artaxo, Paolo Prati, and Meinrat O. Andreae
Atmos. Meas. Tech., 10, 2837–2850, https://doi.org/10.5194/amt-10-2837-2017, https://doi.org/10.5194/amt-10-2837-2017, 2017
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Different Aethalometer correction schemes were compared to a multi-wavelength absorption reference measurement. One of the correction schemes was found to artificially increase the short-wavelength absorption coefficients. It was found that accounting for aerosol scattering properties in the correction is crucial to retrieve the proper absorption Ångström exponent (AAE). We found that the raw AAE of uncompensated Aethalometer attenuation significantly correlates with a measured reference AAE.
Lorenzo Caponi, Paola Formenti, Dario Massabó, Claudia Di Biagio, Mathieu Cazaunau, Edouard Pangui, Servanne Chevaillier, Gautier Landrot, Meinrat O. Andreae, Konrad Kandler, Stuart Piketh, Thuraya Saeed, Dave Seibert, Earle Williams, Yves Balkanski, Paolo Prati, and Jean-François Doussin
Atmos. Chem. Phys., 17, 7175–7191, https://doi.org/10.5194/acp-17-7175-2017, https://doi.org/10.5194/acp-17-7175-2017, 2017
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This paper presents new laboratory measurements of the shortwave mass absorption efficiency (MAE) used by climate models for mineral dust of different origin and at different sizes. We found that small particles are more efficient, by given mass, in absorbing radiation, particularly at shorter wavelength. Because dust has high concentrations in the atmosphere, light absorption by mineral dust can be competitive to other absorbing atmospheric aerosols such as black and brown carbon.
Related subject area
Subject: Aerosols | Technique: Laboratory Measurement | Topic: Instruments and Platforms
The nano-scanning electrical mobility spectrometer (nSEMS) and its application to size distribution measurements of 1.5–25 nm particles
A dual-droplet approach for measuring the hygroscopicity of aqueous aerosol
A method for liquid spectrophotometric measurement of total and water-soluble iron and copper in ambient aerosols
Efficacy of a portable, moderate-resolution, fast-scanning differential mobility analyzer for ambient aerosol size distribution measurements
Coupling a gas chromatograph simultaneously to a flame ionization detector and chemical ionization mass spectrometer for isomer-resolved measurements of particle-phase organic compounds
Investigation of structural changes of atmospheric aerosol samples during two thermal–optical measurement procedures (EUSAAR2, NIOSH870)
Development of the drop Freezing Ice Nuclei Counter (FINC), intercomparison of droplet freezing techniques, and use of soluble lignin as an atmospheric ice nucleation standard
Elemental analysis of oxygenated organic coating on black carbon particles using a soot-particle aerosol mass spectrometer
Effects of Aerosol Size and Coating Thickness on the Molecular Detection using Extractive Electrospray Ionization
On the calibration of FIGAERO-ToF-CIMS: importance and impact of calibrant delivery for the particle-phase calibration
A single-beam photothermal interferometer for in situ measurements of aerosol light absorption
Aqueous particle generation with a 3D printed nebulizer
A new method for operating a continuous-flow diffusion chamber to investigate immersion freezing: assessment and performance study
Characterization of a non-thermal plasma source for use as a mass specrometric calibration tool and non-radioactive aerosol charger
Application of time-of-flight aerosol mass spectrometry for the real-time measurement of particle-phase organic peroxides: an online redox derivatization–aerosol mass spectrometer (ORD-AMS)
Nano-hygroscopicity tandem differential mobility analyzer (nano-HTDMA) for investigating hygroscopic properties of sub-10 nm aerosol nanoparticles
Quantification of toxic metals using machine learning techniques and spark emission spectroscopy
A new approach for measuring the carbon and oxygen content of atmospherically relevant compounds and mixtures
An experimental study on light scattering matrices for Chinese loess dust with different particle size distributions
Counting on chemistry: laboratory evaluation of seed-material-dependent detection efficiencies of ultrafine condensation particle counters
Photophoretic spectroscopy in atmospheric chemistry – high-sensitivity measurements of light absorption by a single particle
Laboratory evaluation of particle-size selectivity of optical low-cost particulate matter sensors
Mapping ice formation to mineral-surface topography using a micro mixing chamber with video and atomic-force microscopy
High-humidity tandem differential mobility analyzer for accurate determination of aerosol hygroscopic growth, microstructure, and activity coefficients over a wide range of relative humidity
Development of an improved two-sphere integration technique for quantifying black carbon concentrations in the atmosphere and seasonal snow
Development of the DRoplet Ice Nuclei Counter Zurich (DRINCZ): validation and application to field-collected snow samples
Multiple-scattering correction factor of quartz filters and the effect of filtering particles mixed in water: implications for analyses of light absorption in snow samples
The effect of rapid relative humidity changes on fast filter-based aerosol-particle light-absorption measurements: uncertainties and correction schemes
Characterisation of the filter inlet system on the FAAM BAe-146 research aircraft and its use for size-resolved aerosol composition measurements
Molecular characterization of alkyl nitrates in atmospheric aerosols by ion mobility mass spectrometry
Changes in PM2.5 peat combustion source profiles with atmospheric aging in an oxidation flow reactor
Quantifying organic matter and functional groups in particulate matter filter samples from the southeastern United States – Part 1: Methods
Microelectromechanical-system-based condensation particle counter for real-time monitoring of airborne ultrafine particles
Measurement techniques for identifying and quantifying hydroxymethanesulfonate (HMS) in an aqueous matrix and particulate matter using aerosol mass spectrometry and ion chromatography
Versatile aerosol concentration enrichment system (VACES) operating as a cloud condensation nuclei (CCN) concentrator: development and laboratory characterization
A new aerosol flow reactor to study secondary organic aerosol
Morphology and Raman spectra of aerodynamically classified soot samples
Separation and detection of aqueous atmospheric aerosol mimics using supercritical fluid chromatography–mass spectrometry
Humidity effects on the detection of soluble and insoluble nanoparticles in butanol operated condensation particle counters
Structural changes of CAST soot during a thermal–optical measurement protocol
Concept for an electrostatic focusing device for continuous ambient pressure aerosol concentration
Two-wavelength thermal–optical determination of light-absorbing carbon in atmospheric aerosols
A portable dual-smog-chamber system for atmospheric aerosol field studies
Aging aerosol in a well-mixed continuous-flow tank reactor: an introduction of the activation time distribution
The impact of bath gas composition on the calibration of photoacoustic spectrometers with ozone at discrete visible wavelengths spanning the Chappuis band
Ultrasonic nebulization for the elemental analysis of microgram-level samples with offline aerosol mass spectrometry
Instrument artifacts lead to uncertainties in parameterizations of cloud condensation nucleation
Twin-plate Ice Nucleation Assay (TINA) with infrared detection for high-throughput droplet freezing experiments with biological ice nuclei in laboratory and field samples
ChAMBRe: a new atmospheric simulation chamber for aerosol modelling and bio-aerosol research
An instrument for quantifying heterogeneous ice nucleation in multiwell plates using infrared emissions to detect freezing
Weimeng Kong, Stavros Amanatidis, Huajun Mai, Changhyuk Kim, Benjamin C. Schulze, Yuanlong Huang, Gregory S. Lewis, Susanne V. Hering, John H. Seinfeld, and Richard C. Flagan
Atmos. Meas. Tech., 14, 5429–5445, https://doi.org/10.5194/amt-14-5429-2021, https://doi.org/10.5194/amt-14-5429-2021, 2021
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We present the design, modeling, and experimental characterization of the nano-scanning electrical mobility spectrometer (nSEMS), a recently developed instrument that probes particle physical properties in the 1.5–25 nm range. The nSEMS has proven to be extremely powerful in examining atmospheric nucleation and the subsequent growth of nanoparticles in the CERN CLOUD experiment, which provides a valuable asset to study atmospheric nanoparticles and to evaluate their impact on climate.
Jack M. Choczynski, Ravleen Kaur Kohli, Craig S. Sheldon, Chelsea L. Price, and James F. Davies
Atmos. Meas. Tech., 14, 5001–5013, https://doi.org/10.5194/amt-14-5001-2021, https://doi.org/10.5194/amt-14-5001-2021, 2021
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Relative humidity (RH) and hygroscopicity play an important role in regulating the physical, chemical, and optical properties of aerosol. In this work, we develop a new method to characterize hygroscopicity using particle levitation. We levitate two droplets with an electrodynamic balance and measure their size with light-scattering methods using one droplet as a probe of the RH. We demonstrate highly accurate and precise measurements of the RH and hygroscopic growth of a range of samples.
Yuhan Yang, Dong Gao, and Rodney J. Weber
Atmos. Meas. Tech., 14, 4707–4719, https://doi.org/10.5194/amt-14-4707-2021, https://doi.org/10.5194/amt-14-4707-2021, 2021
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Iron and copper are commonly found in ambient aerosols and have been linked to adverse health effects. We describe a relatively simple benchtop instrument that can be used to quantify these metals in aqueous solutions and verify the method by comparison with inductively coupled plasma mass spectrometry. The approach is based on forming light-absorbing metal–ligand complexes that can be measured with high sensitivity utilizing a long-path liquid waveguide capillary cell.
Stavros Amanatidis, Yuanlong Huang, Buddhi Pushpawela, Benjamin C. Schulze, Christopher M. Kenseth, Ryan X. Ward, John H. Seinfeld, Susanne V. Hering, and Richard C. Flagan
Atmos. Meas. Tech., 14, 4507–4516, https://doi.org/10.5194/amt-14-4507-2021, https://doi.org/10.5194/amt-14-4507-2021, 2021
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We assess the performance of a highly portable mobility analyzer, the Spider DMA, in measuring ambient aerosol particle size distributions, with specific attention to its moderate sizing resolution (R=3). Long-term field testing showed excellent correlation with a conventional mobility analyzer (R=10) over the 17–500 nm range, suggesting that moderate resolution may be sufficient to obtain key properties of ambient size distributions, enabling smaller instruments and better counting statistics.
Chenyang Bi, Jordan E. Krechmer, Graham O. Frazier, Wen Xu, Andrew T. Lambe, Megan S. Claflin, Brian M. Lerner, John T. Jayne, Douglas R. Worsnop, Manjula R. Canagaratna, and Gabriel Isaacman-VanWertz
Atmos. Meas. Tech., 14, 3895–3907, https://doi.org/10.5194/amt-14-3895-2021, https://doi.org/10.5194/amt-14-3895-2021, 2021
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Measurement techniques that can achieve molecular characterizations are necessary to understand the differences of fate and transport within isomers produced in the atmospheric oxidation process. In this work, we develop an instrument to conduct isomer-resolved measurements of particle-phase organics. We assess the number of isomers per chemical formula in atmospherically relevant samples and examine the feasibility of extending the use of an existing instrument to a broader range of analytes.
Theresa Haller, Eva Sommer, Thomas Steinkogler, Christian Rentenberger, Anna Wonaschuetz, Anne Kasper-Giebl, Hinrich Grothe, and Regina Hitzenberger
Atmos. Meas. Tech., 14, 3721–3735, https://doi.org/10.5194/amt-14-3721-2021, https://doi.org/10.5194/amt-14-3721-2021, 2021
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Structural changes of carbonaceous aerosol samples during thermal–optical measurement techniques cause a darkening of the sample during the heating procedure which can influence the attribution of the carbonaceous material to organic and elemental carbon. We analyzed structural changes of atmospheric aerosol samples occurring during the EUSAAR2 and NIOSH870 measurement protocols with Raman spectroscopy. We found that the darkening of the sample is not necessarily caused by graphitization.
Anna J. Miller, Killian P. Brennan, Claudia Mignani, Jörg Wieder, Robert O. David, and Nadine Borduas-Dedekind
Atmos. Meas. Tech., 14, 3131–3151, https://doi.org/10.5194/amt-14-3131-2021, https://doi.org/10.5194/amt-14-3131-2021, 2021
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To characterize atmospheric ice nuclei, we present (1) the development of our home-built droplet freezing technique (DFT), which involves the Freezing Ice Nuclei Counter (FINC), (2) an intercomparison campaign using NX-illite and an ambient sample with two other DFTs, and (3) the application of lignin as a soluble and commercial ice nuclei standard with three DFTs. We further compiled the growing number of DFTs in use for atmospheric ice nucleation since 2000 and add FINC.
Mutian Ma, Laura-Hélèna Rivellini, YuXi Cui, Megan D. Willis, Rio Wilkie, Jonathan P. D. Abbatt, Manjula R. Canagaratna, Junfeng Wang, Xinlei Ge, and Alex K. Y. Lee
Atmos. Meas. Tech., 14, 2799–2812, https://doi.org/10.5194/amt-14-2799-2021, https://doi.org/10.5194/amt-14-2799-2021, 2021
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Chemical characterization of organic coatings is important to advance our understanding of the physio-chemical properties and atmospheric processing of black carbon (BC) particles. This work develops two approaches to improve the elemental analysis of oxygenated organic coatings using a soot-particle aerosol mass spectrometer. Analyzing ambient data with the new approaches indicated that secondary organics that coated on BC were likely less oxygenated compared to those externally mixed with BC.
Chuan Ping Lee, Mihnea Surdu, David M. Bell, Houssni Lamkaddam, Mingyi Wang, Farnoush Ataei, Victoria Hofbauer, Brandon Lopez, Neil M. Donahue, Josef Dommen, Andre S. H. Prevot, Jay G. Slowik, Dongyu Wang, Urs Baltensperger, and Imad El Haddad
Atmos. Meas. Tech. Discuss., https://doi.org/10.5194/amt-2021-22, https://doi.org/10.5194/amt-2021-22, 2021
Revised manuscript accepted for AMT
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The extractive electrospray ionization mass spectrometry (EESI-MS) has been deployed for high throughput online detection of analyte particles with minimal fragmentations for decades. Our studies elucidate the extraction mechanism between analyte particles of different properties and charged electrospray droplets at different sizes. The results show that the extraction is a complete coalesce but is limited by the coalesce efficiency at different sizes, affecting the quantification accuracy.
Arttu Ylisirniö, Luis M. F. Barreira, Iida Pullinen, Angela Buchholz, John Jayne, Jordan E. Krechmer, Douglas R. Worsnop, Annele Virtanen, and Siegfried Schobesberger
Atmos. Meas. Tech., 14, 355–367, https://doi.org/10.5194/amt-14-355-2021, https://doi.org/10.5194/amt-14-355-2021, 2021
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FIGAERO-ToF-CIMS enables online volatility measurements of chemical compounds in ambient aerosols. Previously published volatility calibration results however differ from each other significantly. In this study we investigate the reason for this discrepancy. We found a major source of error in the widely used syringe deposition method and propose a new method for volatility calibration by using atomized calibration compounds.
Bradley Visser, Jannis Röhrbein, Peter Steigmeier, Luka Drinovec, Griša Močnik, and Ernest Weingartner
Atmos. Meas. Tech., 13, 7097–7111, https://doi.org/10.5194/amt-13-7097-2020, https://doi.org/10.5194/amt-13-7097-2020, 2020
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Here we report on the development of a novel single-beam photothermal interferometer and its use in the measurement of aerosol light absorption. We demonstrate how light-absorbing gases can be used to calibrate the instrument and how this absorption is automatically subtracted during normal operation. The performance of the instrument is compared to a standard filter-based instrument using a black carbon test aerosol. The 60 s detection limit is found to be less than 10 Mm-1.
Michael Rösch and Daniel J. Cziczo
Atmos. Meas. Tech., 13, 6807–6812, https://doi.org/10.5194/amt-13-6807-2020, https://doi.org/10.5194/amt-13-6807-2020, 2020
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The need for a simple atomizer with a high-output stability combined with the capabilities of CAD software and high-resolution 3D printing has allowed for the design, production and testing of the PRinted drOpleT Generator (PROTeGE) to generate liquid particles from solutions. The size and number concentrations of the generated particles have been characterized with different ammonium sulfate and PSL solutions. PROTeGE is easy to operate, requires minimal maintenance and is cost-effective.
Gourihar Kulkarni, Naruki Hiranuma, Ottmar Möhler, Kristina Höhler, Swarup China, Daniel J. Cziczo, and Paul J. DeMott
Atmos. Meas. Tech., 13, 6631–6643, https://doi.org/10.5194/amt-13-6631-2020, https://doi.org/10.5194/amt-13-6631-2020, 2020
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This study presents a new continuous-flow-diffusion-chamber-style operated ice chamber (Modified Compact Ice Chamber, MCIC) to measure the immersion-freezing efficiency of atmospheric particles. MCIC allowed us to obtain maximum droplet-freezing efficiency at higher time resolution without droplet breakthrough ambiguity. Its evaluation was performed by reproducing published data from the recent ice nucleation workshop and past laboratory data for standard and airborne ice-nucleating particles.
Christian Tauber, David Schmoll, Johannes Gruenwald, Sophia Brilke, Peter Josef Wlasits, Paul Martin Winkler, and Daniela Wimmer
Atmos. Meas. Tech., 13, 5993–6006, https://doi.org/10.5194/amt-13-5993-2020, https://doi.org/10.5194/amt-13-5993-2020, 2020
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In this paper we show that a commercially available plasma charger with nitrogen as the working gas can enhance the charging probability for sub-12 nm particles. In addition, the charger ion mobilities and the chemical composition have been examined using an atmospheric pressure interface time-of-flight mass spectrometer (APi-TOF MS), and comparison of the experimental results revealed that the generated neutralizer ions are not dependent on the charging mechanism.
Marcel Weloe and Thorsten Hoffmann
Atmos. Meas. Tech., 13, 5725–5738, https://doi.org/10.5194/amt-13-5725-2020, https://doi.org/10.5194/amt-13-5725-2020, 2020
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Aerosol mass spectrometers (AMSs) are frequently applied in atmospheric aerosol research in connection with climate, environmental or health-related projects. The paper describes a new real-time technique for the measurement of organic peroxides, which play an important role in new particle formation and as
reactive oxygen speciesin aerosol–health-related aspects of atmospheric aerosols.
Ting Lei, Nan Ma, Juan Hong, Thomas Tuch, Xin Wang, Zhibin Wang, Mira Pöhlker, Maofa Ge, Weigang Wang, Eugene Mikhailov, Thorsten Hoffmann, Ulrich Pöschl, Hang Su, Alfred Wiedensohler, and Yafang Cheng
Atmos. Meas. Tech., 13, 5551–5567, https://doi.org/10.5194/amt-13-5551-2020, https://doi.org/10.5194/amt-13-5551-2020, 2020
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We present the design of a nano-hygroscopicity tandem differential mobility analyzer (nano-HTDMA) apparatus that enables high accuracy and precision in hygroscopic growth measurements of aerosol nanoparticles with diameters less than 10 nm. We further introduce comprehensive methods for system calibration and validation of the performance of the system. We then study the size dependence of the deliquescence and the efflorescence of aerosol nanoparticles for sizes down to 6 nm.
Seyyed Ali Davari and Anthony S. Wexler
Atmos. Meas. Tech., 13, 5369–5377, https://doi.org/10.5194/amt-13-5369-2020, https://doi.org/10.5194/amt-13-5369-2020, 2020
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Traditional instruments for detection and quantification of toxic metals in the atmosphere are expensive. In this study, we have designed, fabricated, and tested a low-cost instrument, which employs cheap components to detect and quantify toxic metals. Advanced machine learning (ML) techniques have been used to improve the instrument's performance. This study demonstrates how the combination of low-cost sensors with ML can address problems that traditionally have been too expensive to be solved.
James F. Hurley, Nathan M. Kreisberg, Braden Stump, Chenyang Bi, Purushottam Kumar, Susanne V. Hering, Pat Keady, and Gabriel Isaacman-VanWertz
Atmos. Meas. Tech., 13, 4911–4925, https://doi.org/10.5194/amt-13-4911-2020, https://doi.org/10.5194/amt-13-4911-2020, 2020
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The chemical composition of aerosols has implications for human and ecosystem health. Current methods for determining chemical composition are expensive and require highly trained personnel. Our method is promising for moderate-cost, low-maintenance measurements of oxygen / carbon ratios, a key chemical parameter, and other elements may also be studied. In this work, we coupled two commonly used detectors to assess O / C ratios in a variety of compounds and mixtures within an acceptable error.
Jia Liu, Qixing Zhang, Yinuo Huo, Jinjun Wang, and Yongming Zhang
Atmos. Meas. Tech., 13, 4097–4109, https://doi.org/10.5194/amt-13-4097-2020, https://doi.org/10.5194/amt-13-4097-2020, 2020
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Angular behaviors of light scattering properties for loess dust sampled from the Chinese Loess Plateau were investigated using a self-developed apparatus. Two samples with different size distributions were used to represent dust that can or cannot be transported over long ranges. Analyses of optical simulation results showed that differences of measurements are mainly caused by different sizes. This study is useful for the development of optical models of loess dust during transportation.
Peter Josef Wlasits, Dominik Stolzenburg, Christian Tauber, Sophia Brilke, Sebastian Harald Schmitt, Paul Martin Winkler, and Daniela Wimmer
Atmos. Meas. Tech., 13, 3787–3798, https://doi.org/10.5194/amt-13-3787-2020, https://doi.org/10.5194/amt-13-3787-2020, 2020
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In this paper we show that chemical similarities between the seed particle material and the working fluid have an impact on the detection efficiency of commonly used CPCs. A remarkable set of CPCs, including the newly developed V-WCPC 3789, was tested. Among others, reproducibly generated organic seeds based on beta-caryophyllene were used. Theoretical simulations of supersaturation profiles were successfully linked to measured data.
Nir Bluvshtein, Ulrich K. Krieger, and Thomas Peter
Atmos. Meas. Tech., 13, 3191–3203, https://doi.org/10.5194/amt-13-3191-2020, https://doi.org/10.5194/amt-13-3191-2020, 2020
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Light-absorbing organic particles undergo transformations during their exposure in the atmosphere. The role these particles play in the global radiative balance is uncertain. This study describes high-sensitivity and high-precision measurements of light absorption by a single particle levitated in an electrodynamic balance. This high level of sensitivity enables future studies to explore the major processes responsible for changes to the particle's light absorptivity.
Joel Kuula, Timo Mäkelä, Minna Aurela, Kimmo Teinilä, Samu Varjonen, Óscar González, and Hilkka Timonen
Atmos. Meas. Tech., 13, 2413–2423, https://doi.org/10.5194/amt-13-2413-2020, https://doi.org/10.5194/amt-13-2413-2020, 2020
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Particle-size-dependent detection ranges of low-cost particulate matter sensors were evaluated in a laboratory experiment. Six different sensor models were evaluated altogether. The results showed that none of the sensor models adhered to the technical specifications provided by the manufacturers, and thus a high risk of sensor misuse is posed. It is paramount that the limitations regarding the particle size discrimination of low-cost sensors are acknowledged properly.
Raymond W. Friddle and Konrad Thürmer
Atmos. Meas. Tech., 13, 2209–2218, https://doi.org/10.5194/amt-13-2209-2020, https://doi.org/10.5194/amt-13-2209-2020, 2020
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An obstacle to predicting ice content in mixed-phase clouds is the inability to directly view atmospheric ice nucleation at the nanoscale, where this process occurs. Here we show how a cloud-like environment can be created in a small atomic-force microscopy (AFM) sample cell. By colocating video microscopy of ice formation with high-resolution AFM images, we quantitatively show how the surface topography, down to nanometer-length scales, can determine the preferential locations of ice formation.
Eugene F. Mikhailov and Sergey S. Vlasenko
Atmos. Meas. Tech., 13, 2035–2056, https://doi.org/10.5194/amt-13-2035-2020, https://doi.org/10.5194/amt-13-2035-2020, 2020
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Here we present the high-humidity tandem differential hygroscopicity analyzer (HHTDMA) and a new method to measure the hygroscopic growth of aerosol particles with in situ restructuring to minimize the influence of particle shape. Our results demonstrate that the HHTDMA system described in this work allows us to determine the thermodynamic characteristics of aqueous solutions with an accuracy close to that obtained by bulk methods.
Xin Wang, Xueying Zhang, and Wenjing Di
Atmos. Meas. Tech., 13, 39–52, https://doi.org/10.5194/amt-13-39-2020, https://doi.org/10.5194/amt-13-39-2020, 2020
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We developed an improved two-sphere integration (TSI) technique to quantify black carbon (BC) concentrations in the atmosphere and seasonal snow. The major advantage of this system is that it combines two distinct integrated spheres to reduce the scattering effect due to light-absorbing particles and thus provides accurate determinations of total light absorption from BC collected on Nuclepore filters.
Robert O. David, Maria Cascajo-Castresana, Killian P. Brennan, Michael Rösch, Nora Els, Julia Werz, Vera Weichlinger, Lin S. Boynton, Sophie Bogler, Nadine Borduas-Dedekind, Claudia Marcolli, and Zamin A. Kanji
Atmos. Meas. Tech., 12, 6865–6888, https://doi.org/10.5194/amt-12-6865-2019, https://doi.org/10.5194/amt-12-6865-2019, 2019
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Here we present the development and applicability of the DRoplet Ice Nuclei Counter Zurich (DRINCZ). DRINCZ allows for ice nuclei in the immersion mode to be quantified between 0 and -25 °C with an uncertainty of ±0.9 °C. Furthermore, we present a new method for assessing biases in drop-freezing apparatuses and cumulative ice-nucleating-particle concentrations from snow samples collected in the Austrian Alps at the Sonnblick Observatory.
Jonas Svensson, Johan Ström, and Aki Virkkula
Atmos. Meas. Tech., 12, 5913–5925, https://doi.org/10.5194/amt-12-5913-2019, https://doi.org/10.5194/amt-12-5913-2019, 2019
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Collection of particles onto filters can be a valuable tool in several research disciplines. Here we experiment with quartz filters and their response to soot particles in an airborne and liquid state in order to better understand the sampling procedure. Soot particles in a liquid phase showed absorption of light nearly double that of airborne sampled particles.
Sebastian Düsing, Birgit Wehner, Thomas Müller, Almond Stöcker, and Alfred Wiedensohler
Atmos. Meas. Tech., 12, 5879–5895, https://doi.org/10.5194/amt-12-5879-2019, https://doi.org/10.5194/amt-12-5879-2019, 2019
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This study examines the effect of changes in relative humidity on measurements made by two different filter-based absorption photometers. Different filter loads, loading materials, and filter types are considered. It was found that both instruments react opposingly and with different magnitudes. One of the devices showed a variation in the dependence on the loading material. For each of the two devices, a correction approach is provided. Recommendations based on the findings are given.
Alberto Sanchez-Marroquin, Duncan H. P. Hedges, Matthew Hiscock, Simon T. Parker, Philip D. Rosenberg, Jamie Trembath, Richard Walshaw, Ian T. Burke, James B. McQuaid, and Benjamin J. Murray
Atmos. Meas. Tech., 12, 5741–5763, https://doi.org/10.5194/amt-12-5741-2019, https://doi.org/10.5194/amt-12-5741-2019, 2019
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Sampling coarse-mode aerosol from a fast-moving research aircraft is challenging and can be subject to substantial losses and enhancements. We characterise these losses and enhancements for an inlet system designed to collect aerosol onto filters. We go on to present an application of this inlet system where we use electron microscopy to study the size and composition of the collected aerosol particles.
Xuan Zhang, Haofei Zhang, Wen Xu, Xiaokang Wu, Geoffrey S. Tyndall, John J. Orlando, John T. Jayne, Douglas R. Worsnop, and Manjula R. Canagaratna
Atmos. Meas. Tech., 12, 5535–5545, https://doi.org/10.5194/amt-12-5535-2019, https://doi.org/10.5194/amt-12-5535-2019, 2019
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We develop a new technique to characterize organic nitrates as intact molecules in atmospheric aerosols, and we apply this technique to identify hydroxy nitrates in secondary organic aerosols produced from the photochemical oxidation of isoprene.
Judith C. Chow, Junji Cao, L.-W. Antony Chen, Xiaoliang Wang, Qiyuan Wang, Jie Tian, Steven Sai Hang Ho, Adam C. Watts, Tessa B. Carlson, Steven D. Kohl, and John G. Watson
Atmos. Meas. Tech., 12, 5475–5501, https://doi.org/10.5194/amt-12-5475-2019, https://doi.org/10.5194/amt-12-5475-2019, 2019
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Source profiles that allow peat fire contributions to be distinguished from other source contributions using receptor models are lacking for a wide variety of peat fuels and burning conditions. These profiles change with photochemical aging during transport. Fresh and aged profiles for a variety of peat fuels are measured with an oxidation flow reactor to improve source attributions at distant receptors.
Alexandra J. Boris, Satoshi Takahama, Andrew T. Weakley, Bruno M. Debus, Carley D. Fredrickson, Martin Esparza-Sanchez, Charlotte Burki, Matteo Reggente, Stephanie L. Shaw, Eric S. Edgerton, and Ann M. Dillner
Atmos. Meas. Tech., 12, 5391–5415, https://doi.org/10.5194/amt-12-5391-2019, https://doi.org/10.5194/amt-12-5391-2019, 2019
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Organic species are abundant in atmospheric particle-phase (aerosol) pollution and originate from a variety of biogenic and anthropogenic sources. Infrared spectrometry of filter-based atmospheric particle samples can afford a direct measurement of the particulate organic matter concentration and a characterization of its composition. This work discusses recent method improvements and compositions measured in samples from the SouthEastern Aerosol Research and Characterization (SEARCH) network.
Seong-Jae Yoo, Hong-Beom Kwon, Ui-Seon Hong, Dong-Hyun Kang, Sang-Myun Lee, Jangseop Han, Jungho Hwang, and Yong-Jun Kim
Atmos. Meas. Tech., 12, 5335–5345, https://doi.org/10.5194/amt-12-5335-2019, https://doi.org/10.5194/amt-12-5335-2019, 2019
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We present a portable, inexpensive, and accurate microelectromechanical-system-based (MEMS-based) condensation particle counter (CPC) for the sensitive and precise monitoring of airborne ultrafine particles (UFPs). The CPC is miniaturized by utilizing MEMS technology and 3-D printing. Thus, the proposed system can potentially be used for UFP monitoring in various environments.
Eleni Dovrou, Christopher Y. Lim, Manjula R. Canagaratna, Jesse H. Kroll, Douglas R. Worsnop, and Frank N. Keutsch
Atmos. Meas. Tech., 12, 5303–5315, https://doi.org/10.5194/amt-12-5303-2019, https://doi.org/10.5194/amt-12-5303-2019, 2019
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Measurement techniques commonly used to analyze particulate matter composition can result in the possible misidentification of sulfur-containing species, especially for the case of sulfate and hydroxymethanesulfonate (HMS). The efficiency and limitations of these techniques, along with a method that enables further studies of the contribution of sulfur-containing species, S(IV) versus S(VI), to particulate matter under low-light atmospheric conditions, are described in this work.
Carmen Dameto de España, Gerhard Steiner, Harald Schuh, Constantinos Sioutas, and Regina Hitzenberger
Atmos. Meas. Tech., 12, 4733–4744, https://doi.org/10.5194/amt-12-4733-2019, https://doi.org/10.5194/amt-12-4733-2019, 2019
Kelly L. Pereira, Grazia Rovelli, Young C. Song, Alfred W. Mayhew, Jonathan P. Reid, and Jacqueline F. Hamilton
Atmos. Meas. Tech., 12, 4519–4541, https://doi.org/10.5194/amt-12-4519-2019, https://doi.org/10.5194/amt-12-4519-2019, 2019
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We present the design and operation of a newly built continuous-flow reactor (CFR), which can be used as a tool to gain considerable insights into the composition and physical state of secondary organic aerosol (SOA). The CFR was used to generate large quantities of SOA mass, allowing the use of highly accurate techniques that are not usually accessible. We demonstrate how this unique approach can be used to investigate the relationship between SOA formation and physiochemical properties.
Alberto Baldelli and Steven Nicholas Rogak
Atmos. Meas. Tech., 12, 4339–4346, https://doi.org/10.5194/amt-12-4339-2019, https://doi.org/10.5194/amt-12-4339-2019, 2019
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Raman spectra and soot primary particle size change with the impactor sampling stage even though the soot source is a steady laboratory flame. This is of potential interest to atmospheric researchers because past work on aerodynamically separated samples was interpreted in terms of distinct particle sources producing particles of different sizes and chemical structures.
Daisy N. Grace, Melissa B. Sebold, and Melissa M. Galloway
Atmos. Meas. Tech., 12, 3841–3851, https://doi.org/10.5194/amt-12-3841-2019, https://doi.org/10.5194/amt-12-3841-2019, 2019
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The identification and quantification of compounds within an atmospheric particle can be difficult to achieve. We present a supercritical fluid chromatography method to separate these compounds prior to mass spectrometry analysis. The aqueous methylglyoxal–ammonium sulfate system was used as a proxy for atmospheric aerosol; polar columns combined with a carbon dioxide and methanol mobile phase provided the most efficient separation. This method can be extended to other atmospheric systems.
Christian Tauber, Sophia Brilke, Peter Josef Wlasits, Paulus Salomon Bauer, Gerald Köberl, Gerhard Steiner, and Paul Martin Winkler
Atmos. Meas. Tech., 12, 3659–3671, https://doi.org/10.5194/amt-12-3659-2019, https://doi.org/10.5194/amt-12-3659-2019, 2019
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In this paper we show that sodium chloride particles with a mobility diameter below 10 nm indicate different activation regimes. The results of our studies reveal that with increasing humidity the activation of NaCl particles with a standard butanol-based CPC can be enhanced. For Ag this humidity dependence could not be observed – an indicator for the importance of molecular interactions between seed and vapor molecules.
Theresa Haller, Christian Rentenberger, Jannik C. Meyer, Laura Felgitsch, Hinrich Grothe, and Regina Hitzenberger
Atmos. Meas. Tech., 12, 3503–3519, https://doi.org/10.5194/amt-12-3503-2019, https://doi.org/10.5194/amt-12-3503-2019, 2019
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In thermal–optical measurement techniques – widely used techniques to separate organic and elemental carbon – a filter sample is heated stepwise first in He and then in He+O2. Pyrolysis of organic material occurring during heating in He influences the results but is not fully understood. In this study, structural changes of carbonaceous material during a thermal–optical heating procedure are analyzed with Raman spectroscopy, TEM, UV–VIS and the integrating-sphere method.
Joseph L. Woo, Neha Sareen, Allison N. Schwier, and V. Faye McNeill
Atmos. Meas. Tech., 12, 3395–3402, https://doi.org/10.5194/amt-12-3395-2019, https://doi.org/10.5194/amt-12-3395-2019, 2019
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We present a proof-of-concept method of concentrating aerosols in a continuous stream using an applied electric field. Potential enrichment was estimated using a trajectory model, predicting values of up to 65 % for 75–200 nm aerosol, using voltages of up to 30 kV. Experimental results using similar geometry yielded up to 15 % observed enrichment for the same conditions. These results imply that aerosol enrichment using an applied electric field can be achieved in continuous-flow applications.
Dario Massabò, Alessandro Altomari, Virginia Vernocchi, and Paolo Prati
Atmos. Meas. Tech., 12, 3173–3182, https://doi.org/10.5194/amt-12-3173-2019, https://doi.org/10.5194/amt-12-3173-2019, 2019
Christos Kaltsonoudis, Spiro D. Jorga, Evangelos Louvaris, Kalliopi Florou, and Spyros N. Pandis
Atmos. Meas. Tech., 12, 2733–2743, https://doi.org/10.5194/amt-12-2733-2019, https://doi.org/10.5194/amt-12-2733-2019, 2019
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A portable dual-smog-chamber system was developed using two identical pillow-shaped smog chambers surrounded by UV lamps. The system has been designed to use ambient air as the starting point of the experiments. It can be easily disassembled and transported, enabling the study of various atmospheric environments and it can be used with natural sunlight. The results of test experiments using ambient air are discussed as examples of applications of this system.
Franz Friebel and Amewu A. Mensah
Atmos. Meas. Tech., 12, 2647–2663, https://doi.org/10.5194/amt-12-2647-2019, https://doi.org/10.5194/amt-12-2647-2019, 2019
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Simulating atmospheric aging processes in the laboratory under atmospheric conditions is a challenging task. The main obstacle is achieving long observation times with a reasonable amount of technical and financial input. We adapted the concept of the continuous-flow stirred tank reactor in order to achieve long observation times (up to 16 h) in small chamber volumes (3m3). We successfully tested this concept by oxidation of soot particles with ozone.
Michael I. Cotterell, Andrew J. Orr-Ewing, Kate Szpek, Jim M. Haywood, and Justin M. Langridge
Atmos. Meas. Tech., 12, 2371–2385, https://doi.org/10.5194/amt-12-2371-2019, https://doi.org/10.5194/amt-12-2371-2019, 2019
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Photoacoustic spectroscopy provides measurements of absorption coefficient for aerosol and gas samples but requires careful calibration, and researchers often use concentrations of ozone. Recent work has shown that the bath gas composition impacts the accuracy of this calibration at visible wavelengths. We explore further the role of bath gas, demonstrating that the calibration accuracy is optimal for a bath gas composed of 20 % oxygen and 80 % nitrogen at wavelengths of 405, 514 and 658 nm.
Rachel E. O'Brien, Kelsey J. Ridley, Manjula R. Canagaratna, John T. Jayne, Philip L. Croteau, Douglas R. Worsnop, Sri Hapsari Budisulistiorini, Jason D. Surratt, Christopher L. Follett, Daniel J. Repeta, and Jesse H. Kroll
Atmos. Meas. Tech., 12, 1659–1671, https://doi.org/10.5194/amt-12-1659-2019, https://doi.org/10.5194/amt-12-1659-2019, 2019
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Analysis of the elemental composition of organic mixtures can provide insights into the sources and aging of environmental samples. Here we describe a method that allows characterization of this type of material using micrograms of material by a combination of a small-volume ultrasonic nebulizer and an aerosol mass spectrometer. This technique enables rapid analysis of complex organic mixtures using approximately an order of magnitude less sample than standard analyses.
Jessica A. Mirrielees and Sarah D. Brooks
Atmos. Meas. Tech., 11, 6389–6407, https://doi.org/10.5194/amt-11-6389-2018, https://doi.org/10.5194/amt-11-6389-2018, 2018
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Particles in the air, called aerosols, can participate in cloud formation and affect cloud properties. One way to study these particles is by determining their ability to uptake water, called hygroscopicity. Apparent hygroscopicity is one such measurement. This study evaluates how errors can arise in determining apparent hygroscopicity and how to avoid or minimize them when collecting data.
Anna T. Kunert, Mark Lamneck, Frank Helleis, Ulrich Pöschl, Mira L. Pöhlker, and Janine Fröhlich-Nowoisky
Atmos. Meas. Tech., 11, 6327–6337, https://doi.org/10.5194/amt-11-6327-2018, https://doi.org/10.5194/amt-11-6327-2018, 2018
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The new Twin-plate Ice Nucleation Assay with infrared detection for high-throughput droplet freezing experiments in microliter-sized droplets is introduced, which was tested and characterized with bacterial and fungal ice nuclei. It was applied to investigate the influence of chemical processing on the activity of biological ice nuclei, and aqueous extracts of atmospheric aerosols were studied for ice nuclei activity.
Dario Massabò, Silvia Giulia Danelli, Paolo Brotto, Antonio Comite, Camilla Costa, Andrea Di Cesare, Jean François Doussin, Federico Ferraro, Paola Formenti, Elena Gatta, Laura Negretti, Maddalena Oliva, Franco Parodi, Luigi Vezzulli, and Paolo Prati
Atmos. Meas. Tech., 11, 5885–5900, https://doi.org/10.5194/amt-11-5885-2018, https://doi.org/10.5194/amt-11-5885-2018, 2018
Alexander D. Harrison, Thomas F. Whale, Rupert Rutledge, Stephen Lamb, Mark D. Tarn, Grace C. E. Porter, Michael P. Adams, James B. McQuaid, George J. Morris, and Benjamin J. Murray
Atmos. Meas. Tech., 11, 5629–5641, https://doi.org/10.5194/amt-11-5629-2018, https://doi.org/10.5194/amt-11-5629-2018, 2018
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The detection of low concentrations of ice-nucleating particles (INPs) is challenging. Here we present a new technique (IR-NIPI) that is sensitive to low concentrations of INPs (> 0.01 L−1) and uses an infrared camera with a novel calibration to detect the freezing of experimental suspensions. IR-NIPI temperature measurements prove to be robust with a series of comparisons to thermocouple measurements. Experimental comparisons to other freezing assay instruments are also in agreement.
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Short summary
Experiments conducted inside confined artificial environments, such as atmospheric simulation chambers (ASCs), where atmospheric conditions and composition are controlled, can provide valuable information on bio-aerosol viability, dispersion, and impact. We focus here on the reproducible aerosolization and injection of viable microorganisms into an ASC, the first and crucial step of any experimental protocol to expose bio-aerosols to different atmospheric conditions.
Experiments conducted inside confined artificial environments, such as atmospheric simulation...
