Determination of Trace Amounts of Water in Organic Solvents Using the Differential Potentiometric Method

Abstract

A differential potentiometric method (DPM) of the system, organic solvent-(0-0.1% m/m) water-10-3M perchloric acid using two pH glass electrodes of the same type, has been employed and tested experimentally. The system shows systematic change in potential with variations in water concentration. This technique allows simple, rapid and accurate determination of trace amounts of water in organic solvents, without preliminary calibration.