Analysis of Highly Concentrated Aqueous Solutions of Alkali Metal Chlorides Using Sonoluminescence Spectroscopy.

The use of the sonoluminescence spectroscopy for the determination of main components in concentrated aqueous solution of alkali metal halides is examined. In concentrated RCl solutions (R = Li, Na, K;  = 100-600 g · dm) the sonoluminescence intensity is inversely proportional to ultrasound frequency in the range from 2 Hz up to 5 Hz. In the CsCl case the inverse proportionality is disturbed at ultrasound frequencies higher than 3 MHz.