高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (10): 1217.

• 论文 • 上一篇    下一篇

Ni2+-胆红素和Ni2+-2,2'联吡啶-胆红素的单扫描极谱研究

王聚礼, 蒋勉, 周性尧   

  1. 武汉大学化学系, 武汉, 430072
  • 收稿日期:1991-10-09 修回日期:1992-06-15 出版日期:1992-10-24 发布日期:1992-10-24
  • 通讯作者: 周性尧
  • 基金资助:

    国家自然科学基金

Single-Sweep Polarographic Investigation of Ni(Ⅱ)-Bilirubin and Ni(Ⅱ)-2,2' Bipyridyl-Bilirubin

WANG Ju-Li, JIANG Mian, ZHOU Xing-Yao   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1991-10-09 Revised:1992-06-15 Online:1992-10-24 Published:1992-10-24

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摘要： 本文研究了Ni2+-胆红素和Ni2+-2,2'联吡啶-胆红素在微碱性介质中的单扫描极谱行为和电极反应机理.在Ni2+-胆红素体系中.于—1.0V处产生络合物的催化前波;而在Ni2+-2,2'联吡啶-胆红素体系中,则于—1.5V处产生催化氢波.这2个体系的线性范围分别为1×10-6～5×10-6mol/L和2×10-7～8×10-6mol/L.

关键词: 胆红素, 极谱催化前波, 催化氢波

Abstract: The single-sweep polarographic behavior and mechanisms of Ni (Ⅱ)-bilirubin(BR) and Ni(Ⅱ)-2,2' bipyridyl(Bipy)-bilirubin were investigated.In pH 7.5 phosphate buffer solution,Ni(Ⅱ)-BRexhibited a catalytic prewave with cathodic peak potential-1.0 V(vs.SCE) and Ni(Ⅱ)-Bipy-BRproduced a sensitive catalytic hydrogen wave with cathodic peak potential-1.5 V(vs.SCE).These waves can be used to determine trace bilirubin,the heights of derivative peak are linear with bilirubin over the ranges of 1×10-6～5×10-6 mol/Land 2×10-7～8×10-6 mol/L respectively.

Key words: Bilirubin, Polarographic catalytic prewave, Catalytic hydrogen wave

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