Articles | Volume 18, issue 16
Atmos. Chem. Phys., 18, 12413–12431, 2018
https://doi.org/10.5194/acp-18-12413-2018
Atmos. Chem. Phys., 18, 12413–12431, 2018
https://doi.org/10.5194/acp-18-12413-2018

Research article 28 Aug 2018

Research article | 28 Aug 2018

Evidence for pyrazine-based chromophores in cloud water mimics containing methylglyoxal and ammonium sulfate

Lelia Nahid Hawkins et al.

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Short summary
Atmospheric reactions can change the color of particles; this has implications for global climate. We present evidence of pyrazine compounds in cloud water mimics. We measured changes in brownness and composition during evaporation and acidity changes to understand the importance of the new compounds because the reactions parallel browning in foods. Drying favors browning and pyrazine formation, while acidity favors only pyrazine formation. Even acidic cloud water, when dried, produce pyrazines.
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