» Articles » PMID: 36170374

Daytime SO Chemistry on Ubiquitous Urban Surfaces As a Source of Organic Sulfur Compounds in Ambient Air

Overview
Journal Sci Adv
Specialties Biology
Science
Date 2022 Sep 28
PMID 36170374
Authors
Affiliations
Soon will be listed here.
Abstract

The reactions of sulfur dioxide (SO) with surface-bound compounds on atmospheric aerosols lead to the formation of organic sulfur (OS) compounds, thereby affecting the air quality and climate. Here, we show that the heterogeneous reaction of SO with authentic urban grime under near-ultraviolet sunlight irradiation leads to a large suite of various organic compounds including OS released in the gas phase. Calculations indicate that at the core area of Guangzhou, building surface uptake of SO is 15 times larger than uptake of SO on aerosol surfaces, yielding ~20 ng m of OS that represents an important fraction of the observed OS compounds (60 to 200 ng m) in ambient aerosols of Chinese megacities. This chemical pathway occurring during daytime can contribute to the observed fraction of OS compounds in aerosols and improve the understanding of haze formation and urban air pollution.

Citing Articles

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere.

Ossola R, Farmer D Chem Rev. 2024; 124(9):5764-5794.

PMID: 38652704 PMC: 11082906. DOI: 10.1021/acs.chemrev.3c00763.


Formation of nitrogen-containing gas phase products from the heterogeneous (photo)reaction of NO with gallic acid.

Li P, Gemayel R, Li X, Liu J, Tang M, Wang X Commun Chem. 2023; 6(1):198.

PMID: 37717093 PMC: 10505156. DOI: 10.1038/s42004-023-01003-3.

References
1.
Wang K, Zhang Y, Huang R, Wang M, Ni H, Kampf C . Molecular Characterization and Source Identification of Atmospheric Particulate Organosulfates Using Ultrahigh Resolution Mass Spectrometry. Environ Sci Technol. 2019; 53(11):6192-6202. DOI: 10.1021/acs.est.9b02628. View

2.
Gingrich S, Diamond M, Stern G, McCarry B . Atmospherically derived organic surface films along an urban-rural gradient. Environ Sci Technol. 2001; 35(20):4031-7. DOI: 10.1021/es010699o. View

3.
Liu J, Li S, Zeng J, Mekic M, Yu Z, Zhou W . Assessing indoor gas phase oxidation capacity through real-time measurements of HONO and NO in Guangzhou, China. Environ Sci Process Impacts. 2019; 21(8):1393-1402. DOI: 10.1039/c9em00194h. View

4.
Li P, Pang H, Wang Y, Deng H, Liu J, Loisel G . Inorganic Ions Enhance the Number of Product Compounds through Heterogeneous Processing of Gaseous NO on an Aqueous Layer of Acetosyringone. Environ Sci Technol. 2022; 56(9):5398-5408. DOI: 10.1021/acs.est.1c08283. View

5.
Minerath E, Elrod M . Assessing the potential for diol and hydroxy sulfate ester formation from the reaction of epoxides in tropospheric aerosols. Environ Sci Technol. 2009; 43(5):1386-92. DOI: 10.1021/es8029076. View