Abstract: Using polyaniline modified electrode as an indicator electrode and calomel electrodeas a reference electrode, the oscillographic potentiometric acid-base titrations were per-formed successfully in aqueous solutions containing strong acids or bases, weak acids orbases, polyprotontic acids or mixtures of bases. In comparison with biplatinum acid-baseoscillo-potentiometric titration this method gives more distinct potential breaks and thestoichiometric point can be observed easily with good roproducibility.

Key words: oscillographic potentiometric titration, acid-base titration, polyaniline modified electrode