Square wave voltammetric determination of diclofenac in liquid phase using a novel ionic liquid multiwall carbon nanotubes paste electrode

被引：63

作者：

Goodarzian, Maryam ^{[1
]}

Khalilzade, Mohammad A. ^{[2
]}

Karimi, Fatemeh ^{[3
]}

Gupta, Vinod Kumar ^{[4
]}

Keyvanfard, Mohsen ^{[3
]}

Bagheri, Hassan ^{[5
]}

Fouladgar, Masoud ^{[6
]}

机构：

[1] Islamic Azad Univ, Qaemshahr Branch, Dept Chem, Qaem Shahr, Iran

[2] Islamic Azad Univ, Mazandaran Sci & Res Branch, Dept Chem, Mazandaran, Iran

[3] Islamic Azad Univ, Majlesi Branch, Dept Chem, Esfahan, Iran

[4] Indian Inst Technol, Dept Chem, Roorkee 247667, Uttar Pradesh, India

[5] Islamic Azad Univ, Takestan Branch, Dept Chem, Takestan, Iran

[6] Islamic Azad Univ, Falavarjan Branch, Dept Biochem, Falavarjan, Iran

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2014年 / 197卷

关键词：

Diclofenac; Multiwalled carbon nanotubes; Ionic liquid; Modified electrode; Voltammetry; NICOTINAMIDE ADENINE-DINUCLEOTIDE; SELECTIVE POTENTIOMETRIC SENSOR; POLY(VINYL CHLORIDE) MATRIX; FOOD SAMPLES; PVC MATRIX; ELECTROCATALYTIC DETERMINATION; FERROCENEDICARBOXYLIC ACID; ELECTROCHEMICAL SENSOR; URINE SAMPLES; HUMAN PLASMA;

D O I：

10.1016/j.molliq.2014.04.037

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The direct electrochemistry of diclofenac (DCF) at a surface of modified carbon paste electrode (CPE) was described. The electrode was modified with multiwall carbon nanotubes (MWCNTs) and 1-butyl-3-methylimidazolium hexafluoro phosphate as a binder. The oxidation peak potential of the DCF at a surface of the ionic liquid carbon nanotubes paste electrode (IL/CNTPE) appeared at 750 mV that was about 70 mV lower than the oxidation peak potential at the surface of the traditional carbon paste electrode under similar condition. Under the optimized conditions at pH 7.0, the peak current was linear to DCF concentrations over the concentration range of 03-750 mu mol L-1, using square wave voltammetry (SWV). The detection limit was 0.09 mu mol L-1. The proposed method was successfully applied to the determination of DCF in both pharmaceutical and patient urine samples. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：114 / 119

页数：6

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