Molecular and physical composition of tar balls in wildfire smoke: an investigation with complementary ionisation methods and 15-Tesla FT-ICR mass spectrometry

Environ. Sci.: Atmos., 2023, 3,1552-1562
DOI: 10.1039/D3EA00085K, Paper
Open Access Open Access
Amna Ijaz, William Kew, Zezhen Cheng, Susan Mathai, Nurun Nahar Lata, Libor Kovarik, Simeon Schum, Swarup China, Lynn R. Mazzoleni
Laser desorption ionisation, coupled with ultrahigh-resolution mass spectrometry, provides an apt reflection of the physical properties of tar balls in wildfire smoke.
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Acoustic levitation with polarising optical microscopy (AL-POM): water uptake in a nanostructured atmospheric aerosol proxy

Environ. Sci.: Atmos., 2023, Advance Article
DOI: 10.1039/D3EA00083D, Paper
Open Access Open Access
Creative Commons Licence  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Adam Milsom, Adam M. Squires, Christopher Brasnett, William N. Sharratt, Annela M. Seddon, Christian Pfrang
We present acoustic levitation combined with polarising optical microscopy (AL-POM). Fatty acid aerosols were probed and a model fit revealed a ca. 5–6 orders of magnitude difference in water diffusion coefficient upon a phase transition between optically birefringent and non-birefringent phases.
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Emerging investigator series: aqueous oxidation of isoprene-derived organic aerosol species as a source of atmospheric formic and acetic acids

Environ. Sci.: Atmos., 2023, Advance Article
DOI: 10.1039/D3EA00076A, Paper
Open Access Open Access
Kelvin H. Bates, Daniel J. Jacob, James D. Cope, Xin Chen, Dylan B. Millet, Tran B. Nguyen
Aqueous photochemistry of isoprene derivatives helps reconcile model budgets of organic aerosol mass and gas-phase formic and acetic acids.
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