Abstract: This paper presents a new method which improved osciilographic chronopotentiometric method.This method can improve dE/dt～E curve and can overcome some drawbacks of dE/dt～E curve.It changes incision of dE/dt～E curve into peak and has the advantage of a good re-producibility,wide linear range and high sensitivity.As using it,we applied inner marker method and frequency-spectrum analysis to carry out quantitative analysis,satisfactory results were obtained.

Key words: Improved oscillographic chronopotentioroetric method, Inner marker method, Frequency-spectrum analysis