A sensitive nanocomposite-based electrochemical sensor for voltammetric simultaneous determination of isoproterenol, acetaminophen and tryptophan

被引：99
作者：
Karimi-Maleh, Hassan [1 ]
Moazampour, Mahbobeh [1 ]
Ahmar, Hamid [2 ]
Beitollahi, Hadi [3 ]
Ensafi, Ali A. [4 ]
机构：
[1] Grad Univ Adv Technol, Dept Chem, Kerman, Iran
[2] Shahid Beheshti Univ, Fac Sci, Dept Chem, GC, Tehran, Iran
[3] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Dept Environm, Kerman, Iran
[4] Isfahan Univ Technol, Dept Chem, Esfahan 8415683111, Iran
来源：
MEASUREMENT | 2014年 / 51卷
关键词：
Isoproterenol; Acetaminophen; Tryptophan; Modified electrode; Multiwalled carbon nanotubes; CARBON-PASTE ELECTRODE; INJECTION SPECTROPHOTOMETRIC DETERMINATION; PERFORMANCE LIQUID-CHROMATOGRAPHY; NICOTINAMIDE ADENINE-DINUCLEOTIDE; PHARMACEUTICAL FORMULATIONS; SELECTIVE DETERMINATION; POTENTIOMETRIC SENSOR; URIC-ACID; NANOTUBES; MEMBRANE;
D O I：
10.1016/j.measurement.2014.01.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrooxidation of isoproterenol (ISPT), acetaminophen (AC) and tryptophan (Trp) and their mixture has been studied using an 8,9-dihydroxy-7-methyl-12H-benzothiazolo[2,3-b]quinazolin-12-one modified multiwall carbon nanotubes paste electrode (DMBQ-MCNTPE). The novel sensor exhibited potent and persistent electron mediating behavior followed by well separated oxidation peaks towards ISPT, AC and Trp with activation over-potential. The peak currents were linearly dependent on ISPT, AC and Trp concentrations using square wave voltammetry (SWV) method in the range of 0.04-400, 5.0-500, and 10.0-800 mu mol L-1, with detection limits of 0.009, 1.0, and 4.0 mu mol L-1, respectively. The modified electrode was used for the determination of ISPT, AC and Trp in biological and pharmaceutical samples. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：91 / 99
页数：9
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