Electropolymerization of ferulic acid on multi-walled carbon nanotubes modified glassy carbon electrode as a versatile platform for NADH, dopamine and epinephrine separate detection

被引：64
|
作者：
da Silva, Leonardo Vieira [1 ,2 ,5 ]
Lopes, Cleylton Bezerra [1 ,2 ,5 ]
da Silva, Wilson Ceciliano [2 ]
de Paiva, Yen Galdino [1 ]
dos Santos Silva, Francisco de Assis [3 ,5 ]
Lima, Phabyanno Rodrigues [2 ,5 ]
Kubota, Lauro Tatsuo [4 ,5 ]
Fonseca Goulart, Marilia Oliveira [1 ,5 ]
机构：
[1] Univ Fed Alagoas, Inst Quim & Biotecnol, BR-57072970 Maceio, AL, Brazil
[2] IFAL, Inst Fed Educ Ciencia & Tecnol Alagoas, BR-57020600 Maceio, AL, Brazil
[3] IFBaiano, Inst Fed Educ Ciencia & Tecnol Baiano, BR-48110000 Catu, BA, Brazil
[4] Univ Estadual Campinas, Inst Quim, C Postal 6154, BR-13084971 Campinas, SP, Brazil
[5] Univ Estadual Campinas, Inst Nacl Ciencia & Tecnol Bioanalit, BR-13084971 Campinas, SP, Brazil
来源：
MICROCHEMICAL JOURNAL | 2017年 / 133卷
关键词：
Ferulic add polymerization; Dopamine; NADH; Epinephrine; Chemically modified electrodes; Quinone/hydroquinone system; POLY-XANTHURENIC ACID; CAFFEIC ACID; ELECTROCATALYTIC ACTIVITY; ELECTROCHEMICAL SENSORS; ANTIOXIDANT PROPERTIES; AMPEROMETRIC SENSOR; ASCORBIC-ACID; OXIDATION; MEDIATOR;
D O I：
10.1016/j.microc.2017.04.014
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The polymerization of ferulic acid (poly-FA) on multi-walled carbon nanotubes (MWCNT) modified glassy carbon electrode was performed and the modified platform applied for the determination of NADH, epinephrine (EP) and dopamine (DA), one at a time. Cyclic voltammetry and chronoamperometry were employed to investigate the electrocatalytic oxidation of NADH, EP and DA on the modified electrode, in aqueous solutions. The obtained analytical curves for NADH, EP, and DA showed linear ranges between 59-1560, 73-1406, and 5-120 mu mol L-1, respectively. The detection limits were 17.7, 222 and 22 mu mol L-1 for NADH, EP and DA, respectively. The catalytic constant for the oxidation of NADH, EP and DA on the modified electrode were 5.56 x 10(3), 6.99 x 10(3) and 1.15 x 10(4) L mol(-1) s(-1), respectively. The obtained versatile electrode was applied to the successful determination of EP, in epinephrine hydrochloride injection and DA in pharmaceutical samples. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：460 / 467
页数：8
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