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

页码：1552 / 1563

页数：12

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