Jump to main content
Jump to site search

Volume 137, 2008
Previous Article Next Article

Deliquescence behaviour of single levitated ternary salt/carboxylic acid/water microdroplets

Author affiliations

Abstract

The deliquescence relative humidities (DRH) of ammonium sulfate as well as ammonium sulfate/dicarboxylic acid (glutaric, maleic and tartaric) mixtures as a function of temperature and relative composition have been studied using an electrodynamic balance (EDB) in connection with optical microscopy and Mie scattering. The absolute DRH values for pure ammonium sulfate as well as their temperature dependence are consistent with literature data and with the AIM model of Clegg et al. The addition of either glutaric or maleic acid to ammonium sulfate leads to a decrease of the DRH value, with the temperature dependence either remaining constant (glutaric acid) or increasing (maleic acid) with increasing acid concentration. This difference is attributed to the higher acidity of maleic acid, which generates stronger ionic interactions with the ammonium sulfate system. In the case of tartaric acid, the deliquescence behaviour of ammonium sulfate is substantially influenced by the formation of insoluble ammonium tartrate.

Back to tab navigation

Publication details

The article was received on 21 Feb 2007, accepted on 16 Apr 2007 and first published on 03 Aug 2007


Article type: Paper
DOI: 10.1039/B702651J
Citation: Faraday Discuss., 2008,137, 265-278
  •   Request permissions

    Deliquescence behaviour of single levitated ternary salt/carboxylic acid/water microdroplets

    L. Treuel, S. Schulze, Th. Leisner and R. Zellner, Faraday Discuss., 2008, 137, 265
    DOI: 10.1039/B702651J

Search articles by author

Spotlight

Advertisements