Electrocatalytic determination of captopril using a modified carbon nanotube paste electrode: Application to determination of captopril in pharmaceutical and biological samples

被引：87
作者：
Beitollahi, Hadi [1 ]
Taher, Mohammad Ali [2 ]
Ahmadipour, Malihe [2 ,3 ]
Hosseinzadeh, Rahman [4 ]
机构：
[1] Grad Univ Adv Technol, Dept Environm, Inst Sci & High Technol & Environm Sci, Kerman, Iran
[2] Shahid Bahonar Univ Kerman, Dept Chem, Kerman, Iran
[3] Shahid Bahonar Univ Kerman, Young Researchers Soc, Kerman, Iran
[4] Univ Mazandaran, Dept Organ Chem, Fac Chem, Babol Sar, Iran
来源：
MEASUREMENT | 2014年 / 47卷
关键词：
Captopril; Electrochemical sensor; Voltammetry; Carbon nanotube paste electrodes; SENSITIVE VOLTAMMETRIC SENSOR; URIC-ACID; ELECTROCHEMICAL SENSOR; ASCORBIC-ACID; SELECTIVE DETERMINATION; HUMAN PLASMA; 2,7-BIS(FERROCENYL ETHYL)FLUOREN-9-ONE; POTENTIOMETRIC SENSOR; LIQUID-CHROMATOGRAPHY; MASS-SPECTROMETRY;
D O I：
10.1016/j.measurement.2013.10.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A carbon paste electrode modified with carbon nanotube and benzoylferrocene (BF) was fabricated. The electrochemical study of the modified electrode, as well as its efficiency for electrocatalytic oxidation of captopril (CAP), was described. The electrode was employed to study the electrocatalytic oxidation of CAP, using cyclic voltammetry (CV), chronoamperometry (CHA) and square wave voltammetry (SWV) as diagnostic techniques. It has been found that the oxidation of CAP at the surface of modified electrode occurs at a potential of about 85 mV less positive than that of an unmodified CPE. SWV exhibits a linear dynamic range from 1.0 x 10(-7) to 3.5 x 10(-4) M and a detection limit of 3.0 x 10(-8) M for CAP. Finally the modified electrode was used for determination of CAP in CAP tablet and urine sample. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：770 / 776
页数：7
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