A Comparison of pH Measurements using the Antimony Microelectrode and Glass Electrode

Publisher Website
Google Scholar
Abstract
Microelectrodes are useful for making in situ soil pH measurements. A study was done to compare soil pH measurements made with a standard glass pH electrode with those made using an antimony (Sb) microelectrode. Soil‐water and soil‐water‐citrate systems were prepared using soil samples from various horizons of four Missouri soils, and the pH values of the same samples were measured with glass and Sb microelectrodes. Over all soils, the average difference between pH measurements made with the Sb and the glass electrodes in the soil‐water system was 0.36 pH units. In the soil‐water‐citrate system, pH measured with the Sb electrode was consistently higher than pH measured with the glass electrode, and the average difference was 0.64 pH units.

This publication has 1 reference indexed in Scilit: