Electrification of gas bubbles as an analytical tool.
When a gas passes through a liquid, a charge is produced and this is carried on in the droplets formed when the bubble bursts at the surface of the liquid. A theory to account for the relationship between the bubble charge and concentration of electrolyte, viz. q proportional, variant C(-1 2 ), is derived and applied to a number of uni-univalent and multivalent electrolytes. The general agreement between theory and experiment and the reasonable reproducibility of the technique show that it could have analytical application. Such use is exemplified in laboratory simulations of flowing systems for continuous analysis and in bubble-charge indication of titration end-points.
Pantony
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Department of Metallurgy, Imperial College of Science and Technology, Prince Consort Road, London, S.W.7, U.K.
Stagg
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