An ultrasonic method for surface-active substances concentrating from aqueous solutions

Substances concentrated by surface sorption at a liquid-gas interface can be isolated by transforming the surface layer of the liquid using high-frequency focused ultrasound into an aerosol followed by aerosol condensation. The concentration of the surface substance in the obtained condensate is several times higher than in the initial solution. The effect was most pronounced at low contents of surface active component in the initial solution.