Electrocatalytic oxidation of guanine and DNA on a carbon paste electrode modified by cobalt hexacyanoferrate films

被引：100
|
作者：
Abbaspour, A [1 ]
Mehrgardi, MA [1 ]
机构：
[1] Shiraz Univ, Dept Chem, Shiraz 71454, Iran
来源：
ANALYTICAL CHEMISTRY | 2004年 / 76卷 / 19期
关键词：
D O I：
10.1021/ac049421f
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrochemical behavior of cobalt hexacyanoferrate complex adsorbed on a carbon paste electrode (CPE) and its application to the electrocatalytic oxidation of guanine and single-strand DNA (ss-DNA) in aqueous solution are investigated in this report. The modification of CPE by the adsorption of this complex results in excellent amplification of the guanine oxidation response of ss-DNA. The effects of paste composition, scan rate, DNA, and guanine concentration were studied. The detection limits of 52 and 920 ng mL(-1) were obtained for guanine and ss-DNA, respectively.
引用
收藏
页码：5690 / 5696
页数：7
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