Comparative study of the metal phthalocyanates as active components in salicylate-selective electrodes

Tetrakis-tert-butylphthalocyanates of Al(III), Sn(IV), Cu(II). Lu(III) and Dy(III) were tested as the reagents for plasticized membrane salicylate sel ective electrodes. The most significant deviation of potentiometric selecti vity from the Hofmeister series is observed for the membranes doped with AI (III) complex. The different mechanisms are suggested for the carriers cont aining different central ion, on the basis of the influence of lipophilic a dditives and the liquid-liquid extraction data.