ELECTROCHEMICAL DETECTION OF EPINEPHRINE USING AN L-GLUTAMIC ACID FUNCTIONALIZED GRAPHENE MODIFIED ELECTRODE

被引：27
|
作者：
Kang, Hongzhe [1 ]
Jin, Yan [1 ]
Han, Qian [2 ]
机构：
[1] Hebei Normal Univ, Dept Phys Educ, Shijiazhuang 050024, Hebei, Peoples R China
[2] Hebei Normal Univ, Coll Resources & Environm Sci, Hebei Key Lab, Lab Environm Change & Ecol Construct Hebei Prov, Shijiazhuang 050024, Hebei, Peoples R China
来源：
ANALYTICAL LETTERS | 2014年 / 47卷 / 09期
关键词：
Electrochemical sensor; Epinephrine; Graphene; L-glutamic acid; Nanocomposite; SELF-ASSEMBLED MONOLAYERS; ASCORBIC-ACID; SELECTIVE DETERMINATION; SENSOR; NOREPINEPHRINE; NANOCOMPOSITE; DOPAMINE; BEHAVIOR;
D O I：
10.1080/00032719.2013.876541
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The development and application of an L-glutamic acid functionalized graphene nanocomposite, modified glassy carbon electrode are reported for the determination of epinephrine. The properties of the nanocomposite were characterized by scanning electron microscopy, ultraviolet-visible absorption spectroscopy, infrared spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The modified electrode had high sensitivity and strongly catalytic activity for the detection of epinephrine. A linear relationship between the epinephrine concentration and the current response was obtained in the range of 1 x 10(-7) M to 1 x 10(-3) M by differential pulse voltammetry with a limit of detection of 3 x 10(-8) M. The modified electrode was employed to determine epinephrine in urine with satisfactory results.
引用
收藏
页码：1552 / 1563
页数：12
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