Scientific journal
Название журнала на английском
ISSN 2500-0802
ПИ №ФС77-61154

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THE USE ARYLDIAZONIUM TOSYLATES FOR SURFACE MODIFICATION OF ELECTRODES AT VOLTAMMETRY DETERMINATION OF INORGANIC ELEMENTS

Deryabina V.I. 1 Slepchenko G.B. 1 Schukina T.I. 1
1 National Research Tomsk Polytechnic University
Researches on the choice of ryldiazonium tosylates as a modifier to create organo-modified electrode were carried out. It is shown that the best organic modifier for the surface modification of silver electrodes and gold-graphite electrodes is aryldiazonium tosylates with amino-group as a substituent. Method for producing of organo-modified electrodes for determination of inorganic elements (iodine, selenium, iron and copper) by voltammetry have been developed. Methods for voltammetric determination of iodine and selenium at silver modified electrode and iron and copper at gold-graphite electrodes allowing to avoid the using of metal mercury electrode formation and measure inorganic elements without inset gases (nitrogen, argon) purge have been proposed. The total error (Sr) of those methods is not more than 15%.