Polarographic studies of cadmium(II) ions binding in aqueous polyelectrolyte solutions

Polarographic behaviour of cadmium(II) ions in aqueous solutions of polyacrylic acid with and without indifferent electrolyte (potassium chloride) has been examined. Data for polyacrylic acid were compared with those for the monomer. The diffusion current of polarographic reduction of cadmium(II) ions in the range 0 ? [KCl] < 0.2 N in the presence of polyelectrolytes depends upon the concentration and degree of polymer neutralization and also upon the nature of cation (Na⁺, K⁺) in the polyacrylate salt.