Organosulfates in Ambient Aerosol: State of Knowledge and Future Research Directions on Formation, Abundance, Fate, and Importance

Environmental Science & Technology
Martin BrüggemannHartmut Herrmann

Abstract

Organosulfates (OSs), also referred to as organic sulfate esters, are well-known and ubiquitous constituents of atmospheric aerosol particles. Commonly, they are assumed to form upon mixing of air masses of biogenic and anthropogenic origin, that is, through multiphase reactions between organic compounds and acidic sulfate particles. However, in contrast to this simplified picture, recent studies suggest that OSs may also originate from purely anthropogenic precursors or even directly from biomass and fossil fuel burning. Moreover, besides classical OS formation pathways, several alternative routes have been discovered, suggesting that OS formation possibly occurs through a wider variety of formation mechanisms in the atmosphere than initially expected. During the past decade, OSs have reached a constantly growing attention within the atmospheric science community with evermore studies reporting on large numbers of OS species in ambient aerosol. Nonetheless, estimates on OS concentrations and implications on atmospheric physicochemical processes are still connected to large uncertainties, calling for combined field, laboratory, and modeling studies. In this Critical Review, we summarize the current state of knowledge in atmosph...Continue Reading

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Citations

Mar 10, 2021·The Journal of Physical Chemistry. a·Maofa GeMingyuan Liu
Jun 25, 2021·Environmental Science & Technology·Yuchen WangJian Zhen Yu
Jul 30, 2021·The Journal of Physical Chemistry Letters·Li XuLin Du
Oct 23, 2021·Atmospheric Chemistry and Physics·Andreas TilgnerV Faye McNeill

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