Effects of precursor concentration and acidic sulfate in aqueous glyoxal-OH radical oxidation and implications for secondary organic aerosol.

Environmental Science & Technology
Yi TanBarbara J Turpin

Abstract

Previous experiments demonstrated that aqueous OH radical oxidation of glyoxal yields low-volatility compounds. When this chemistry takes place in clouds and fogs, followed by droplet evaporation (or if it occurs in aerosol water), the products are expected to remain partially in the particle phase, forming secondary organic aerosol (SOA). Acidic sulfate exists ubiquitously in atmospheric water and has been shown to enhance SOA formation through aerosol phase reactions. In this work, we investigate how starting concentrations of glyoxal (30-3000 microM) and the presence of acidic sulfate (0-840 microM) affect product formation in the aqueous reaction between glyoxal and OH radical. The oxalic acid yield decreased with increasing precursor concentrations, and the presence of sulfuric acid did not alter oxalic acid concentrations significantly. A dilute aqueous chemistry model successfully reproduced oxalic acid concentrations, when the experiment was performed at cloud-relevant concentrations (glyoxal <300 microM), but predictions deviated from measurements at increasing concentrations. Results elucidate similarities and differences in aqueous glyoxal chemistry in clouds and in wet aerosols. They validate for the first time the ...Continue Reading

References

Apr 12, 2005·Environmental Science & Technology·John LiggioRobert McLaren
Jul 29, 2005·Environmental Science & Technology·Ho-Jin LimBarbara J Turpin
Sep 8, 2006·Environmental Science & Technology·Katye E AltieriSybil P Seitzinger
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Citations

Jul 5, 2011·Environmental Science & Technology·Ge YuFrank N Keutsch
Jun 21, 2011·Environmental Science & Technology·Corey N OlsonFrank N Keutsch
Jul 14, 2012·Environmental Science & Technology·V Faye McNeillJoseph M Barakat
Mar 29, 2013·Environmental Science & Technology·Christopher J KampfRainer Volkamer
Apr 6, 2013·Environmental Science & Technology·T B NguyenJ H Seinfeld
Dec 18, 2013·Environmental Science & Technology·Diana L Ortiz-MontalvoBarbara J Turpin
Jan 27, 2017·Environmental Science & Technology·Jennifer A FaustJonathan P D Abbatt
Apr 26, 2017·The Journal of Physical Chemistry. a·Christopher M Stangl, Murray V Johnston
Jun 10, 2017·Physical Chemistry Chemical Physics : PCCP·Xiao SuiXiao-Ying Yu
Mar 24, 2015·Physical Chemistry Chemical Physics : PCCP·Jeremy D SmithCort Anastasio
Jun 5, 2012·Chemical Society Reviews·J P D AbbattJ A Thornton
Jul 18, 2014·Physical Chemistry Chemical Physics : PCCP·Vangelis Daskalakis, Marios Hadjicharalambous
Jun 9, 2012·Physical Chemistry Chemical Physics : PCCP·Tran B NguyenSergey A Nizkorodov
Apr 17, 2021·Environmental Science & Technology·Ruifeng ZhangChak K Chan
Jul 12, 2017·The Journal of Physical Chemistry. a·Rebecca L CraigAndrew P Ault
Jul 31, 2019·Environmental Science & Technology·Fei ZhangXiao-Ying Yu
Jul 19, 2017·Environmental Science & Technology·Bartłomiej Witkowski, Tomasz Gierczak
Mar 17, 2015·Chemical Reviews·Christian GeorgeSergey A Nizkorodov
Feb 27, 2015·Chemical Reviews·Alexander LaskinSergey A Nizkorodov
Oct 12, 2019·Environmental Science & Technology·Eleni DovrouFrank N Keutsch
Jun 30, 2018·The Journal of Physical Chemistry. a·Arathala ParandamanAmitabha Sinha
Dec 23, 2020·The Journal of Physical Chemistry Letters·Xiao SuiXiao-Ying Yu
May 29, 2018·ACS Central Science·Rebecca J RapfVeronica Vaida
Sep 25, 2018·Journal of Environmental Sciences (China)·Ci ZhangJing Jin

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