A semiconductor sensor based on indium antimonide for the potentiometric analysis of soils from the Chinarev oil and gas field

Abstract

The ion−salt composition of soils from the Chinarev oil and gas field (West Kazakhstan Region) was studied. A semiconductor sensor based on indium antimonide (InSb) and classical ion-selective electrodes were used to analyze soil extracts. Comparative results of determinations of pH, HCO₃^- Cl^–, and SO₄^2- in soil samples with a semiconductor InSb-electrode and with glass, chloride-selective, and copper-selective electrodes are presented. The use of a single semiconductor sensor for the determination of four components in a soil extract allowed us to reduce the duration of analysis and to unify the determination. Based on the results obtained, the salt composition of soils from the studied field was estimated.