Articles | Volume 21, issue 4
Atmos. Chem. Phys., 21, 2881–2894, 2021
https://doi.org/10.5194/acp-21-2881-2021
Atmos. Chem. Phys., 21, 2881–2894, 2021
https://doi.org/10.5194/acp-21-2881-2021

Research article 25 Feb 2021

Research article | 25 Feb 2021

Aqueous-phase behavior of glyoxal and methylglyoxal observed with carbon and oxygen K-edge X-ray absorption spectroscopy

Georgia Michailoudi et al.

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Supplementary data for the manuscript “Aqueous phase behavior of glyoxal and methylglyoxal observed with carbon and oxygen K-edge X-ray absorption spectroscopy” G. Michailoudi, J. J. Lin, H. Yuzawa, M. Nagasaka, M. Huttula, N. Kosugi, T. Kurtén, M. Patanen, and N. L. Prisle https://doi.org/10.5281/zenodo.4307925

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Short summary
This study provides insight into hydration of two significant atmospheric compounds, glyoxal and methylglyoxal. Using synchrotron radiation excited X-ray absorption spectroscopy, we confirm that glyoxal is fully hydrated in water, and for the first time, we experimentally detect enol structures in aqueous methylglyoxal. Our results support the contribution of these compounds to secondary organic aerosol formation, known to have a large uncertainty in atmospheric models and climate predictions.
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