Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 15, issue 19
Articles | Volume 15, issue 19
https://doi.org/10.5194/acp-15-11273-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-15-11273-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 15, issue 19
Research article
 | 
12 Oct 2015
Research article |  | 12 Oct 2015

Hygroscopic behavior of NaCl–MgCl2 mixture particles as nascent sea-spray aerosol surrogates and observation of efflorescence during humidification

D. Gupta, H.-J. Eom, H.-R. Cho, and C.-U. Ro

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Short summary
Pure MgCl2 particles and NaCl-MgCl2 mixed particles are systematically investigated to observe their hygroscopic behavior, derive experimental phase diagrams, and obtain chemical micro-structures. This work provides new interesting revelations regarding the efflorescence of MgCl2 hydrates during dehydration and also humidification. The observation of an aqueous phase over a wider RH range for NaCl-MgCl2 mixture particles indicates their more probable heterogeneous chemistry than NaCl particles.
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