FIELD: physico-chemical methods of study of environment. SUBSTANCE: process determining concentration of ions in liquids includes separation of sample of analyzed and standard matters by ion-selective membrane, action on analyzed and standard matters by electric field and determination of concentration of detected ions by their number in sample. In this case free ions are removed from standard matter in advance and number of detected ion in sample is found by method of microscopy of surface electromagnetic waves over thickness of layer obtained from ions by way of their precipitation on electrode placed into standard matter after flow of electric current through standard matter was stopped. EFFECT: enhanced authenticity of process. 1 dwg
