Simultaneous electrochemical determination of dopamine, melatonin, methionine and caffeine

被引：138
作者：
Molaakbari, Elahe [1 ]
Mostafavi, Ali [1 ]
Beitollahi, Hadi [4 ,2 ]
机构：
[1] Shahid Bahonar Univ Kerman, Dept Chem, Kerman, Iran
[2] Shahid Bahonar Univ Kerman, Young Researchers Soc, Kerman, Iran
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 208卷
关键词：
Dopamine; Melatonin; Methionine; Caffeine; ZnO nanorods; Carbon paste electrode; BORON-DOPED DIAMOND; VOLTAMMETRIC DETERMINATION; CARBON ELECTRODES; ASCORBIC-ACID; URIC-ACID; LIQUID-CHROMATOGRAPHY; SELECTIVE DETECTION; PARKINSONS-DISEASE; BEVERAGE SAMPLES; PASTE ELECTRODE;
D O I：
10.1016/j.snb.2014.10.130
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel carbon paste electrode modified with ZnO nanorods and 3-(4'-amino-3'-hydroxy-biphenyl-4-yl)-acrylic acid (3,4'AAZCPE) was fabricated. The electrochemical study of the modified electrode, as well as its efficiency for electrocatalytic oxidation of dopamine, is described. It has been found that the oxidation of dopamine at the surface of modified electrode occurs at a potential of about 180 mV less positive than that of an unmodified carbon paste electrode. The detection limit of 5.6 x 10(-8)M for dopamine was obtained using square wave voltammetry (SWV). In addition, this modified electrode was used for simultaneous determination of dopamine, melatonin, methionine and caffeine. Finally, the modified electrode was used for determination of dopamine, melatonin, methionine and caffeine in human blood serum and urine samples. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：195 / 203
页数：9
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