ELECTROANALYTICAL STUDY OF CHELATING EXTRACTANTS - LIX-34

The voltammetric behavior of 4-methyl-N-8-quinolinybenzenesulfonamide closely related to the active component of the commercial extractant L M 34, has been studied in 0.1 M RCl/25% methanol medium as a function of pH, using polarography and cyclic voltammetry techniques. The elect rochemical behavior of the extractant in the presence of Cu (II) ions has also been described. The commercial LM 34 product exhibits a simil ar behavior both in differential pulse polarography and cyclic voltamm etry, and polarographic determination methods have been developed for both reagents. The relationship between reduction peak current and con centration is linear up to 1.96 x 10(-6) M for 4-methyl-N-8-quinolinyl benzenesulfonamide and the corresponding function for LM 34 indicates a low percentage of the active component in the commercial extractant.