Impedance spectral studies of hemoglobin immobilized on Au-colloid modified self-assembled monolayer electrode

被引：3
|
作者：
Yang, Meng [1 ]
Hu, Jingbo [1 ]
Li, Qilong [1 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China
来源：
ANALYTICAL LETTERS | 2007年 / 40卷 / 14期
基金：
中国国家自然科学基金;
关键词：
electrochemical impedance spectroscopy; cyclic voltammograms; hemoglobin; 4-aminothiophenol;
D O I：
10.1080/00032710701486298
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The immobilization of Hemoglobin (Hb) on Au-colloid associated with a 4-Aminothiophenol monolayer on a gold electrode was studied. The electrochemical behaviors of the modified electrode was characterized and investigated by electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CVs). Differnces among each modifying steps were observed. The results implied that Au colloid enlarged the surface of modified electrode so as to increase the immobilization amount of Hb. Some parameters of EIS have been discussed to fit results. This method shows good correlation for detection of Hb in a broad linear range and exhibits low detection limit.
引用
收藏
页码：2758 / 2771
页数：14
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