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

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (10): 1217.

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

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

Department of Chemistry, Wuhan University, Wuhan, 430072

Received:1991-10-09 Revised:1992-06-15 Online:1992-10-24 Published:1992-10-24

Abstract

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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WANG Ju-Li, JIANG Mian, ZHOU Xing-Yao. Single-Sweep Polarographic Investigation of Ni(Ⅱ)-Bilirubin and Ni(Ⅱ)-2,2' Bipyridyl-Bilirubin[J]. Chem. J. Chinese Universities, 1992, 13(10): 1217.

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

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