Applied Physics and Mathematics Annotation << Back FRACTIONATION OF IONS AT A SEPARATION OF A PART OF IONIC FUSION E.YU. SHACHNEVA, V.YA. KHENTOV The presented material describes the process of ion fractionation in the separation of part of the ionic melt. In the present study, it was noted that the phenomenon of separation of a part of a liquid from the surface of aqueous solutions of electrolytes is accompanied by ion fractionation. The process described in the material is observed when a gas bubble bursts on the liquid surface and a cumulative jet is discharged from the bubble cavity and is crushed into droplets. In this case, the composition of cumulative drops is always enriched with weakly hydrated ions, which tend to enter the composition of the surface layer of the interphase boundary electrolyte-gas solution. Of particular interest in the study is the effect of the imbalance of adsorption of anions and cations. It is considered on the example of potassium chloride, both for aqueous solutions and for ionic melts of a substance. It is assumed that the effect of ion fractionation is determined by their mobility. The results of the study confirm the initial idea of the study that in cumulative drops the content of anions of the substance exceeded the content of cations. The observed process of partial acidification of droplets with the described values of the acidity of the medium, equal to ΔpH ~0,1…0,5, could not fully compensate for the lack of cation drops. It is established that the liquid cumulative drops has special properties. It was characterized by a lower surface tension value, and, consequently, a process of partial dehydration of ions as compared with a bulk liquid. The observed phenomenon was characterized by the best wetting surface of the solid. It should be noted that the kinetics of the described process of evaporation of cumulative drops and the kinetics of drops of a bulk liquid differed significantly in the obtained values. Keywords: fluid accumulation, ionic melt fractionation of ions, the ion mobility. DOI: 10.25791/pfim.02.2020.1155 Pp. 22-26.