Acta Phys. -Chim. Sin. ›› 2001, Vol. 17 ›› Issue (06): 542-546.doi: 10.3866/PKU.WHXB20010614

• ARTICLE • Previous Articles     Next Articles

Fast-scan Cyclic Voltammetry Study of Electrooxidation of Adrenaline

Zhang Zhan-Jun;Li Jing-Jian;Wu Xi-Zun;Zhang Wen-Zhi;Cai Sheng-Min   

  1. College of Chemistry and Molecular Engineering,Peking University,Beijing 100871;1Department of Chemistry,Hebei Teacher′s University, Shijiazhuang 050016
  • Received:2000-11-10 Revised:2001-03-29 Published:2001-06-15
  • Contact: Cai Sheng-Min E-mail:caism@pku.edu.cn

Abstract: The mechanism of the electrochemical oxidation of adrenaline was studied using fastscan cyclic voltammetry as a major means.In 1 mol•dm-3 H2SO4,the electrooxidation of adrenaline showed the elementary characteristics of diffusion and were companied by the weak adsorption of electroactive species.In the case of fastscan test,the electrooxidation of adrenaline was considered to obey EC(electron transferchemical reaction) mechanism..When the concentration of adrenaline was below 1.00×10-3 mol•dm-3,the characteristics of adsorption was easily detected.And the characteristics of adsorption became more evident as the concentration of adrenaline was decreased or the potential scan rate was increased.The transfer coefficient α and the rate constant of the electrochemical reaction ks were calculated as 0.264 and 31.81 s-1 respectively.

Key words: Adrenaline, Electrochemical oxidation, Fast-scan cyclic voltammetry,   Cyclic voltammetry, Weak adsorption