Abstract: In this paper, the adsorptive-complex wave of Cu(Ⅱ)-L-adrenaline is proposed. In the supporting electrolyte of B. R. buffer solution at pH = 6. 90, the peak potential of the wave is about-0. 246 V(us. SCE). The behaviour of current-potential curve and the machanism of electrode reaction were studied. The rate constant of the electrode reaction (k_s), transfer coefficient (α), and the composition, apparent stability constant, dissociation constant of the complex were determined.

Key words: Polarographic adsorptive-complex wave, Cu(Ⅱ)-L-adrenaline, Mechanism of the electrode reaction