高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (11): 1444.

• 论文 • 上一篇    下一篇

采样极谱法测定SOD模型化合物催化超氧离子歧化反应速率常数

蒋亦芹, 刘宛乔, 唐开清, 廖展如, 阵沛玲, 石巨恩   

  1. 华中师范大学化学系, 武汉, 430070
  • 收稿日期:1992-01-04 修回日期:1992-05-23 出版日期:1992-11-24 发布日期:1992-11-24
  • 通讯作者: 蒋亦芹
  • 基金资助:

    国家自然科学基金

The Determination of Dismutation Rate Constant of Superoxide Ion Catalyzed by SOD Model Compound with Tast Polarography

JIANG Yi-Qin, LIU Wan-Qiao, TANG Kai-Qing, LIAO Zhan-Ru, CHEN Pei-Ling, SHI Ju-En   

  1. Department of Chemistry, Huazhong Normal University, Wuhan, 430070
  • Received:1992-01-04 Revised:1992-05-23 Online:1992-11-24 Published:1992-11-24

PDF (PC)

被引次数

26

摘要： 用采样极谱法研究了非质子溶剂中SOD模型化合物催化O2-的歧化反应,用简化的函数关系代替动力学微分方程的准确解.通过测定极限催化电流与极限扩散电流比随SOD模型化学物浓度及滴汞电极滴下时间的变化,确定催化O2-歧化反应速率常数K1.

关键词: 采样极谱法, 超氧离子, 超氧离子歧化酶, SOD模型化合物, 催化歧化反应速率常数

Abstract: The SOD model compound-catalyzed dismutation reaction of superoxide ion O2- in aprotic solvent has been studied by tast polarography.Asimplified function is made to replace the exact solution of the kinetic differential equantion with error less than 1%.The catalytic dismutation rate constant k1 is determined by the measurement of the ratio between the catalytic and diffusional current as a function of SOD model compound concentration and the drop time of dropping mercury electrode.

Key words: Tast polarography, Superoxide ion, Superoxide dismutase, SOD model compound, Catalyzed-dismutation rate constant

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