Abstract:

A systematic study on the application of oscillopolarographic titrations to neutralization reactions was carried out with great success. Organic compounds, including ordinary acid-base indicators used in classical titrations, and metallic ions, such as Zn⁺⁺, Pb⁺⁺, Eu⁺⁺⁺, In⁺⁺⁺, Ga⁺⁺⁺, can be usep as indicators whose oscillopolarograms show sharp incisions whose appearance and disappearance depend on the pH of the titrated solution.The oscillopolarographic titration can do many things which can not be done by the classical methods. Very weak acids, such as boric acid and phenol, can be titrated directly by standard bases using this new technique. The new method is more simple, accurate, rapid and much cheaper than the potentiometric titrations and the non-aqueous titrations used ordinarily in these cases.