Graphene Paste Electrode: Analytical Applications for the Quantification of Dopamine, Phenolic Compounds and Ethanol

被引：20

作者：

Gutierrez, Fabiana ^{[1
,2
]}

Comba, Fausto N. ^{[1
]}

Gasnier, Aurelien ^{[1
]}

Gutierrez, Alejandro

Galicia, Laura ^{[2
]}

Parrado, Concepcion ^{[3
]}

Rubianes, Maria D. ^{[1
]}

Rivas, Gustavo A. ^{[1
]}

机构：

[1] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Quim Fis, INFIQC, RA-5000 Cordoba, Argentina

[2] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico

[3] Univ Complutense Madrid, Fac Ciencias Quim, Dept Quim Analit, E-28040 Madrid, Spain

来源：

ELECTROANALYSIS | 2014年 / 26卷 / 08期

关键词：

Graphene paste electrode; Composite electrodes; Ascorbic acid; Dopamine; NADH; Enzymatic biosensors; Phenol biosensor; Ethanol biosensor; Polyphenol oxidase; Alcohol dehydrogenase; WALL CARBON NANOTUBES; ASCORBIC-ACID; SENSITIVE DETERMINATION; ALCOHOL-DEHYDROGENASE; URIC-ACID; ELECTROCHEMICAL-BEHAVIOR; LIQUID-CHROMATOGRAPHY; GOLD-NANOPARTICLES; BIOSENSOR; COMPOSITE;

D O I：

10.1002/elan.201400247

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This work reports the analytical applications of a graphene paste electrode (GrPE) for the quantification of dopamine, ethanol and phenolic compounds. Dopamine was detected by differential pulse voltammetry-adsorptive stripping with medium exchange at submicromolar levels even in the presence of high excess of ascorbic acid and serotonin. The electrocatalytic activity of graphene towards the oxidation of NADH and the reduction of quinones allowed the sensitive amperometric determination of ethanol and phenols using GrPE modified with alcohol dehydrogenase/NAD(+) or polyphenol oxidase, respectively, with successful applications in real samples like alcoholic beverages and tea.

引用

页码：1694 / 1701

页数：8

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