Dehydration of Ions by Cumulation in Liquid Microlayers

It has been established that bubble collapse on a liquid surface is accompanied by cumulation with droplet formation. The cumulation process, which is, nonstationary, has been investigated experimentally. It has been shown that the liquid of cumulative droplets is characterized by a lower value of the surface tension as compared to the bulk liquid. Consequently, the surface layer of droplets is enriched with electrolyte to a greater extent than the surface layer of the bulk liquid. This process is explained by the partial dehydration of ions by cumulation.