Articles | Volume 15, issue 22
Atmos. Chem. Phys., 15, 12867–12877, 2015
https://doi.org/10.5194/acp-15-12867-2015
Atmos. Chem. Phys., 15, 12867–12877, 2015
https://doi.org/10.5194/acp-15-12867-2015

Research article 19 Nov 2015

Research article | 19 Nov 2015

Laboratory evidence of organic peroxide and peroxyhemiacetal formation in the aqueous phase and implications for aqueous OH

Y. B. Lim and B. J. Turpin

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Atmos. Chem. Phys., 16, 14409–14420, https://doi.org/10.5194/acp-16-14409-2016,https://doi.org/10.5194/acp-16-14409-2016, 2016

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Subject: Aerosols | Research Activity: Laboratory Studies | Altitude Range: Troposphere | Science Focus: Chemistry (chemical composition and reactions)
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Cited articles

Altieri, K. E., Seitzinger, S. P., Carlton, A. G., Turpin, B. J., Klein, G. C., and Marshall, A. G.: Oligomers Formed through In-Cloud Methylglyoxal Reactions: Chemical Composition, Properties, and Mechanisms Investigated by Ultra-High Resolution FT-ICR Mass Spectrometry, Atmos. Environ., 42, 1476–1490, 2008.
Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006.
Arakaki, T. and Faust, B. C.: Sources, Sinks, and Mechanisms of Hydroxyl Radical (OH) Photoproduction and Consumption in Authentic Acidic Continental Cloud Waters From Whiteface Mountain, New York: The Role of the Fe(R) (R = II, III) Photochemical Cycle, J. Geophys. Res., 103, 3487–3504, 1998.
Arakaki, T., Anastasio, C., Kuroki, Y., Nakjima, H., Okada, K., Kotani, Y., Handa, D., Azechi, S., Kimura, T., Tsuhako, A., and Miyagi, Y.: A General Scavenging Rate Constant for Reaction of Hydroxyl Radical with Organic Carbon in Atmospheric Waters, Environ. Sci. Technol., 47, 8196–8203, 2013.
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Short summary
This paper demonstrates organic peroxide and peroxyhemiacetal formation during aqueous photooxidation of methylglyoxal using ultra-high-resolution Fourier transform ion cyclotron resonance electrospray ionization mass spectrometry (FTICR-MS). Then, we provide simulation results of organic peroxide/peroxyhemiacetal formation in clouds and wet aerosols and discuss organic peroxides as a source of condensed-phase OH radicals and as a contributor to aqueous secondary organic aerosol (SOA).
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