| 摘要 |
FIELD: electricity. ^ SUBSTANCE: invention is related to methods of analysis of multi-component solutions in wide range of concentrations and may be used in industry at analysis of technological solutions and waste waters, in ecological monitoring of water mediums, analysis of food products and biological materials. Suggested method includes determination of coulometric constant of electrochemical cell for every of defined components, which are concentrated on working electrode at constant value of electrode potential with further single-phase dissolution of deposit in potentiodynamic mode, determination of amount of electricity Qti spent for dissolution of every (i) deposited component, integration of dissolution current in time and determination of amount of electricity Q∞i, which is necessary for full separation of every determined component with application of established values of coulometric constants, after that by values of Q∞i, using Faraday law, amount of each substance in cell is determined and its concentration in sample. ^ EFFECT: reduction of analysis time, increase of accuracy and sensitivity of element concentration determination in solution in automatic mode. ^ 1 tbl, 3 dwg |
