Simultaneous determination of epinephrine and uric acid at ordered mesoporous carbon modified glassy carbon electrode

被引：18
|
作者：
Luo, Liqiang [1 ]
Li, Fang [1 ]
Zhu, Limei [1 ]
Ding, Yaping [1 ]
Zhang, Zhao [1 ]
Deng, Dongmei [1 ]
Lu, Bo [2 ]
机构：
[1] Shanghai Univ, Coll Sci, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China
来源：
ANALYTICAL METHODS | 2012年 / 4卷 / 08期
基金：
中国国家自然科学基金;
关键词：
NANOTUBE PASTE ELECTRODE; ASCORBIC-ACID; SELECTIVE DETERMINATION; FOLIC-ACID; ELECTROCATALYTIC OXIDATION; ELECTROCHEMICAL PROPERTIES; NANOPOROUS CARBON; DOPAMINE; NOREPINEPHRINE; IMMOBILIZATION;
D O I：
10.1039/c2ay25168j
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An ordered mesoporous carbon modified glassy carbon electrode was employed for the simultaneous determination of epinephrine and uric acid by differential pulse voltammetry. The modified electrode exhibited excellent electrocatalytic ability for the oxidation of epinephrine and uric acid, and two well-defined oxidation peaks towards two species with a potential difference of 170 mV appeared at the modified electrode. Under optimum conditions, linear responses of epinephrine and uric acid were obtained in the concentration ranges of 0.5 to 200 mu M, and 0.25 to 100 mu M, with detection limits of 0.2 mu M and 0.07 mu M (S/N = 3), respectively. The proposed modified electrode displayed high selectivity, good stability and reproducibility, and was successfully applied for the determination of epinephrine in epinephrine hydrochloride injection and uric acid in human urine samples.
引用
收藏
页码：2417 / 2422
页数：6
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