Liquid phase analysis of methyldopa in the presence of tyrosine using electrocatalytic effect of a catechol derivative at a surface of NiO nanoparticle modified carbon paste electrode

被引：14

作者：

Keyvanfard, Mohsen ^{[1
]}

Hatami, Mehdi ^{[2
]}

Gupta, Vinod Kumar ^{[3
]}

Agarwal, Shilpi ^{[3
]}

Sadeghifar, Hasan ^{[4
]}

Khalilzadeh, Mohammad A. ^{[5
]}

机构：

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

[2] Univ Bonab, Polymer Res Lab, Bonab 5551761167, Iran

[3] Univ Johannesburg, Dept Appl Chem, Johannesburg, South Africa

[4] North Carolina State Univ, Dept Forest Biomat, Raleigh, NC 27695 USA

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

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2017年 / 230卷

基金：

美国国家科学基金会;

关键词：

Methyldopa; Tyrosine; Liquid phase determination; NiO nanoparticle; Electrocatalytic; NICOTINAMIDE ADENINE-DINUCLEOTIDE; SELECTIVE POTENTIOMETRIC SENSOR; SENSITIVE VOLTAMMETRIC DETERMINATION; PYROLYTIC-GRAPHITE ELECTRODE; POLY(VINYL CHLORIDE) MATRIX; WASTE-WATER SAMPLES; FOLIC-ACID; CHROMATOGRAPHIC DETERMINATION; ELECTROCHEMICAL SENSOR; HUMAN-SERUM;

D O I：

10.1016/j.molliq.2017.01.038

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：

An electrocatalytic based sensor fabricated for square wave voltammetric determination of methyldopa in the presence of tyrosine. For this goal, carbon paste electrode modified with NiO nanoparticle (NiO/NPs) and 2-(3,4-dihydroxyphenethyl)isoindoline-1,3-dione (DHPID) (CPE/DHPID/NiO/NPs) suggested as a highly selective sensor. The CPE/DHPID/NiO/NPs showed an excellent character for electrocatalytic oxidization of methyldopa in aqueous solution. For the mixture containing methyldopa and tyrosine, the oxidation peaks potential well separated from each other with differential potential similar to 500 mV. Methyldopa peak current increased linearly with its concentration at the ranges of 0.08-500 mu M. The CPE/DHPID/NiO/NPs was successfully used for the analysis of methyldopa in drug samples. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：290 / 294

页数：5

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