L-cysteine modified silver electrode and its application to the study of the electrochemistry of hemoglobin

被引：0
|
作者：
Li, GX
Fang, HQ
Long, YT
Chen, HY
Zhu, DX
机构：
[1] NANJING UNIV,DEPT BIOCHEM,NANJING 210093,PEOPLES R CHINA
[2] NANJING UNIV,NATL LAB PHARMACEUT BIOTECHNOL,NANJING 210093,PEOPLES R CHINA
[3] NANJING UNIV,DEPT CHEM,NANJING 210093,PEOPLES R CHINA
来源：
ANALYTICAL LETTERS | 1996年 / 29卷 / 08期
关键词：
chemically modified electrode; bioelectrochemistry; hemoglobin; L-cysteine; silver electrode;
D O I：
暂无
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
L-cysteine can be modified onto a silver electrode by covalent binding through the sulphur to give very stable and long-lived chemically modified electrodes(CMEs). Hemoglobin(Hb) exhibits an excellent voltammetric response at the resulting CMEs. Linear sweep voltammetric(LSV) measurements of Hb on the CMEs reveal the existence of a linear relationship between the cathodic peak current and the concentration of Hb in the range of 5 x 10(-7) similar to 1 x 10(-5) mol/L. The detection limit is about 2 x 10(-7) mol/L. The relative standard deviation of results is 4.5% for 10 successive determinations at 2 x 10(-6) mol/L. Other proteins and chemicals present in samples do not interfere in the assay.
引用
收藏
页码：1273 / 1280
页数：8
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