The continuous determination of sodium in high purity water by using a sodium monitor incorporating a sodium-responsive glass electrode

Abstract

An Electronic Instruments Limited sodium monitor, Model 89C, incorporating a sodium-responsive glass electrode, has been shown to be basically suitable for use in power stations to determine continuously the sodium contents of steam and boiler feed and make-up waters, except when filming amines (e.g., octadecylamine) are present.

Details are given of the tests required to show the essentially Nernstian response of the electrode to changes in sodium concentrations; a regular standardisation procedure is also described.