期刊
ANALYTICAL LETTERS
卷 48, 期 9, 页码 1465-1480出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00032719.2014.986677
关键词
Electrochemically reduced carboxyl graphene modified glassy carbon electrode; Adenine; Carboxyl graphene; Guanine
资金
- National Natural Science Foundation of China [21405121, 21375106, 21175107]
- Fundamental Research Funds for the Central Universities [Z109021303]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, the State Education Ministry
- Northwest AF University [Z111021010, Z109021309]
An electrochemically reduced carboxyl graphene modified glassy carbon electrode (ERCGr/GCE) was prepared from a carboxyl graphene modified glassy carbon electrode (CGr/GCE) and employed for the simultaneous determination of guanine and adenine. The ERCGr/GCE showed an enhanced voltammetric response toward the oxidation of guanine and adenine compared with the CGr/GCE because the conductivity and electrochemical active surface area increased during the reduction process. The voltammetric peak current was linearly dependent on guanine and adenine concentration over the ranges of 0.5-10 and 2.5-50 mu molL(-1), respectively. The detection limits were 0.15 mu molL(-1) for guanine and 0.10 mu molL(-1) for adenine in 50 mu molL(-1) phosphate buffer at pH 6.86. Determination of guanine and adenine in thermally denatured herring sperm DNA showed that the ratio of guanine/adenine was 0.758 demonstrating practical application of the ERCGr/GCE.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据