Source apportionment of oxidative potential depends on the choice of the assay: insights into 5 protocols comparison and implications for mitigation measures

Posted on 13 October 2023 by Pamela A. Dominutti

Environ. Sci.: Atmos., 2023, 3,1497-1512
DOI: 10.1039/D3EA00007A, Paper

Open Access

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Pamela A. Dominutti, Lucille Joanna S. Borlaza, Jean-Jacques Sauvain, Vy Dinh Ngoc Thuy, Stephan Houdier, Guillaume Suarez, Jean-Luc Jaffrezo, Sean Tobin, Cécile Trébuchon, Stéphane Socquet, Emmanuel Moussu, Gladys Mary, Gaëlle Uzu
Oxidative potential assays show a dissimilar sensitivity to the PM₁₀ sources, associated with the chemical composition and chemical processes involved.
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Investigation of HO2 uptake onto Cu(II)- and Fe(II)-doped aqueous inorganic aerosols and seawater aerosols using laser spectroscopic techniques

Posted on 13 October 2023 by Jiaru Li

Environ. Sci.: Atmos., 2023, 3,1384-1395
DOI: 10.1039/D3EA00093A, Paper

Open Access

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Jiaru Li, Yosuke Sakamoto, Kei Sato, Yu Morino, Yoshizumi Kajii
This work establishes the determination of the uptake coefficient of HO₂ onto a series of inorganic aerosols by LP-LIF.
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Organophosphate esters (OPEs) in atmospheric particulate matter in different Brazilian regions

Posted on 13 October 2023 by Priscila Boleta Gonçalves

Environ. Sci.: Atmos., 2023, 3,1533-1540
DOI: 10.1039/D3EA00079F, Paper

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Priscila Boleta Gonçalves, Joyce Cristale, Amanda Araújo da Silva, Danilo Covaes Nogarotto, Daniela Montanari Migliavacca Osório, Lincoln Lucilio Romualdo, Simone Andréa Pozza
Regional sources and meteorological variables influence the levels of OPEs in PM₁₀ samples from Limeira, Catalão, and Novo Hamburgo. The concentrations found pose no non-carcinogenic risk to human health.
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Spectroscopy of cluster aerosol models: IR and UV spectra of hydrated glyoxylate with and without sea salt

Posted on 13 October 2023 by Nina K. Bersenkowitsch

Environ. Sci.: Atmos., 2023, 3,1396-1406
DOI: 10.1039/D3EA00039G, Paper

Open Access

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Nina K. Bersenkowitsch, Sarah J. Madlener, Jakob Heller, Christian van der Linde, Milan Ončák, Martin K. Beyer
Tropospheric glyoxylic acid is most likely converted to glyoxylate in sea salt aerosols. We report on the influence of water and salt ions on the structure and photochemistry of glyoxylate.
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Monoethanolamine decay mediated by photolysis of nitrate in atmospheric particles: a brown carbon and organic phase formation pathway

Posted on 13 October 2023 by Xiaomeng Tian

Environ. Sci.: Atmos., 2023, 3,1541-1551
DOI: 10.1039/D3EA00072A, Paper

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Xiaomeng Tian, Ruifeng Zhang, Bo Wei, Yalin Wang, Yongjie Li, Chak K. Chan
After photolysis, more acidic particles show an increase in pH, while the more neutralized particles show a decrease in pH. NO₃⁻ and MEA decay rates are more sensitive to the initial pH than RH. Water-soluble BrC and an organic phase were formed as potential secondary organic aerosols (SOAs).
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Atmospheric oxidation impact on sea spray produced ice nucleating particles

Posted on 13 October 2023 by Paul J. DeMott

Environ. Sci.: Atmos., 2023, 3,1513-1532
DOI: 10.1039/D3EA00060E, Paper

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Paul J. DeMott, Thomas C. J. Hill, Kathryn A. Moore, Russell J. Perkins, Liora E. Mael, Heidi L. Busse, Hansol Lee, Chathuri P. Kaluarachchi, Kathryn J. Mayer, Jonathan S. Sauer, Brock A. Mitts, Alexei V. Tivanski, Vicki H. Grassian, Christopher D. Cappa, Timothy H. Bertram, Kimberly A. Prather
Ice nucleating particles (INPs) in sea spray aerosol (SSA) are important for ice formation in clouds over oceans. We found that SSA INP concentrations during a phytoplankton bloom were degraded with exposure to 3 to 8 days of atmospheric oxidation.
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Assessing formic and acetic acid emissions and chemistry in western U.S. wildfire smoke: implications for atmospheric modeling

Posted on 13 October 2023 by Wade Permar

Environ. Sci.: Atmos., 2023, Advance Article
DOI: 10.1039/D3EA00098B, Paper

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Wade Permar, Catherine Wielgasz, Lixu Jin, Xin Chen, Matthew M. Coggon, Lauren A. Garofalo, Georgios I. Gkatzelis, Damien Ketcherside, Dylan B. Millet, Brett B. Palm, Qiaoyun Peng, Michael A. Robinson, Joel A. Thornton, Patrick Veres, Carsten Warneke, Robert J. Yokelson, Emily V. Fischer, Lu Hu
Rapid production of formic acid in biomass burning smoke is not captured by the Master Chemical Mechanism (MCM) nor simplified GEOS-Chem chemistry, likely due to missing secondary chemical production.
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The driving effects of common atmospheric molecules for formation of clusters: the case of sulfuric acid, nitric acid, hydrochloric acid, ammonia, and dimethylamine

Posted on 13 October 2023 by Olivia M. Longsworth

Environ. Sci.: Atmos., 2023, Advance Article
DOI: 10.1039/D3EA00118K, Paper

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Olivia M. Longsworth, Conor J. Bready, Macie S. Joines, George C. Shields
Secondary aerosols form from gas-phase molecules that create prenucleation complexes, which grow to form aerosols. Understanding how secondary aerosols form in the atmosphere is essential for a better understanding of global warming.
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A national crowdsourced network of low-cost fine particulate matter and aerosol optical depth monitors: results from the 2021 wildfire season in the United States

Posted on 13 October 2023 by Eric A. Wendt

Environ. Sci.: Atmos., 2023, 3,1563-1575
DOI: 10.1039/D3EA00086A, Paper

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Eric A. Wendt, Bonne Ford, Michael Cheeseman, Zoey Rosen, Jeffrey R. Pierce, Shantanu H. Jathar, Christian L'Orange, Casey Quinn, Marilee Long, John Mehaffy, Daniel D. Miller-Lionberg, David H. Hagan, John Volckens
A novel instrument designed for crowdsourced data collection on air quality and aerosol optical depth.
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VOC emissions by fresh and old asphalt pavements at service temperatures: impacts on urban air quality

Posted on 13 October 2023 by J. Lasne

Environ. Sci.: Atmos., 2023, Advance Article
DOI: 10.1039/D3EA00034F, Paper

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J. Lasne, A. Lostier, M. N. Romanias, S. Vassaux, D. Lesueur, V. Gaudion, M. Jamar, R. G. Derwent, S. Dusanter, T. Salameh
VOC emissions from asphalt pavements at service temperature contribute significantly to SOA formation in urban areas.
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