Development of an automatic system for the on-site pH measurement of soil samples

Abstract

Abstract An automatic pH-measurement directly on-site on the farmland requires robust and reliable sensor systems. The massive antimony oxide electrode offers the possibility to determine the acidity in freshly sampled soils within the required range of pH 4 to pH 7 in a short time and without elaborate preparation steps. Some essential steps of the development of an antimony oxide sensor system applicable for the on-site measuring are presented in detail. The introduced set-up is a promising fundament for the establishment of a rapid pH-determination direct on the field.