Voltammetric Determination of Epinephrine and Uric Acid using Modified Graphene Oxide Nano Sheets Paste Electrode

被引：12
|
作者：
Mohammadi, Sayed Zia [1 ]
Beitollahi, Hadi [2 ]
Rahimi, Nasrin Mohammad [1 ]
机构：
[1] Payame Noor Univ, Dept Chem, Tehran, Iran
[2] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Environm Dept, Kerman, Iran
来源：
JOURNAL OF ANALYTICAL CHEMISTRY | 2019年 / 74卷 / 04期
关键词：
epinephrine; uric acid; graphene oxide nanosheets; modified electrode; voltammetry; SIMULTANEOUS ELECTROCHEMICAL DETERMINATION; ASCORBIC-ACID; CARBON; DOPAMINE; NOREPINEPHRINE; NANOPARTICLES; FABRICATION; SENSOR; ACETAMINOPHEN; HYDROQUINONE;
D O I：
10.1134/S1061934819040117
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A carbon paste electrode was prepared and modified with 3-(4'-amino-3'-hydroxy-biphenyl-4-yl)-acrylic acid and graphene nanosheets. In phosphate buffer solution, the modified electrode showed an excellent electrocatalytic effect on the oxidation of epinephrine. This was further used to determine epinephrine in the presence of uric acid by square wave voltammetry. The oxidation peak current showed a linear relationship with the concentration of epinephrine in the range of 1.0 x 10(-7) to 5.0 x 10(-5) M, with the detection limit of 5 x 10(-8) M. The method has high sensitivity, selectivity, stability, and has been successfully applied to determining epinephrine and uric acid in real samples.
引用
收藏
页码：345 / 354
页数：10
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