Measurement of soil chloride by specific ion electrode

Abstract

Highly significant differences were found between soil chloride values determined by potentiometric titration and those determined by specific ion electrode in aqueous soil suspension. The presence of very small particles in the suspension was found to be responsible for the differences. A simple, rapid and accurate method for the direct determination of chloride by specific ion electrode in aqueous soil suspension is presented. The differences were eliminated by the addition of potassium alum. A correlation coefficient of 0 · 999 between the presented electrode method and the potentiometric titration method was obtained.