METHOD FOR STRIPPING VOLTAMMETRY DEFINITION OF NITRITE- AND CHLORIDE-IONS WITH THEIR JOINT PRESENCE

摘要

FIELD: measurement equipment.;SUBSTANCE: invention may be used in detection of nitrite- and chloride-ions, for instance, in natural waters. In accordance with the invention, identification is carried out by value of the anode peak of electrochemical dissolution of nitrite-ions and cathode peak of electrochemical dissolution of chloride-ions when sweeping potential of a gold-modified carbon electrode from -0.5 to +1.2 V. The background electrolyte is sodium sulfate. Electrochemical dissolution is carried out while changing potential of a working gold-modified carbon electrode with the speed of 100 mV/s, and voltampere curves are registered. On the basis of the peak of voltamperograms of nitrite-ions (+0.72 V) and chloride-ions (-0.2 V), their content in an aqueous solution is decided.;EFFECT: invention makes it possible to define content of nitrite-ions in the interval of concentrations 0,01-50,00 mg/l, and chloride-ions - 10,00-500,00 mg/l.;1 tbl