Articles | Volume 15, issue 15
https://doi.org/10.5194/acp-15-8975-2015
https://doi.org/10.5194/acp-15-8975-2015
Research article
 | 
13 Aug 2015
Research article |  | 13 Aug 2015

Hygroscopic and phase separation properties of ammonium sulfate/organics/water ternary solutions

M. A. Zawadowicz, S. R. Proud, S. S. Seppalainen, and D. J. Cziczo

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Cited articles

Bertram, A. K., Martin, S. T., Hanna, S. J., Smith, M. L., Bodsworth, A., Chen, Q., Kuwata, M., Liu, A., You, Y., and Zorn, S. R.: Predicting the relative humidities of liquid-liquid phase separation, efflorescence, and deliquescence of mixed particles of ammonium sulfate, organic material, and water using the organic-to-sulfate mass ratio of the particle and the oxygen-to-carbon elemental ratio of the organic component, Atmos. Chem. Phys., 11, 10995–11006, https://doi.org/10.5194/acp-11-10995-2011, 2011.
Braban, C. F. and Abbatt, J. P. D.: A study of the phase transition behavior of internally mixed ammonium sulfate – malonic acid aerosols, Atmos. Chem. Phys., 4, 1451–1459, https://doi.org/10.5194/acp-4-1451-2004, 2004.
Braban, C. F., Abbatt, J. P. D., and Cziczo, D. J.: Deliquescence of Ammonium Sulfate Particles at Sub-Eutectic Temperatures, Geophys. Res. Lett., 28, 3879–3882, 2001.
Braban, C. F., Carroll, M. F., Styler, S. A., and Abbatt, J. P. D.: Phase transitions of malonic and oxalic acid aerosols, J. Phys. Chem. A, 107, 6594–6602, 2003.
Buajarern, J., Mitchem, L., and Reid, J. P.: Characterizing multiphase organic/inorganic/aqueous aerosol droplets, J. Phys. Chem. A, 111, 9054–9061, 2007.
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Short summary
This work investigates hygroscopic properties of internally mixed organic/inorganic aerosol particles. Aerosol particles containing organic and inorganic components can phase separate under certain relative humidity conditions, creating particles with an inorganic core and an organic shell. This paper explores whether water uptake from gaseous phase still occurs in such phase-separated systems. It finds that phase separation does not inhibit water uptake for the five systems that were studied.
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