METHOD OF VOLT-AMPEROMETRIC DETERMINATION OF CONCENTRATION OF NICKEL IN SOLUTIONS OF ZINC SULFATE

摘要

Field of, analytical chemistry, rapid analysis of process solutions, and circulating wastewater nonferrous metallurgy. SUMMARY OF THE INVENTION: the analyte solution, e.g. 8SNS added zinc metal dust. The resulting mixture was stirred for 30-60 s using a mechanical stirrer, and filtered on a vacuum funnel through filter paper, to 5 ml of a supporting electrolyte is added 2.5 M KCNS, and then, after stirring, poured into an electrolytic cell and floor rografiruyut in the potential range (- 0.4 - (0.8) The registers at the same current-voltage curve (cathodic peak) nickel, nickel content in the solution being analyzed is determined by the height of the peak (the limiting current value) at a potential of -6.64 V relative hlorse-. ribs Nogo reference electrode using the calibration th graphics method or standard solution additives. In this case the total duration of analysis, including sample preparation, does not exceed 3 min. 5 yl. w YO