Determination of perrhenate ion in industrial and natural solutions by the means of voltammetric ion-selective electrodes

The article is devoted to the determination of the perrhenate anion in real in-situ leaching solutions by means of voltammetry on the interface between two immiscible electrolyte solutions and a mass-produced voltammetric ion-selective electrode. Methods of overcoming the interfering influence of different factors, e.g., high amounts of molybdenum, low pH and high concentration of iron, are also discussed. On the basis of this study a method for the determination of rhenium concentration in real industrial solutions was developed and certified