A new electrochemical sensor for the simultaneous determination of acetaminophen and codeine based on porous silicon/palladium nanostructure

被引:95
|
作者
Ensafi, Ali A. [1 ]
Ahmadi, Najmeh [1 ]
Rezaei, Behzad [1 ]
Abarghoui, Mehdi Mokhtari [1 ]
机构
[1] Isfahan Univ Technol, Dept Chem, Esfahan 8415683111, Iran
关键词
Porous silicon/palladium nanostructure; Acetaminophen; Codeine; Differential pulse voltammetry; Simultaneous determination; ASCORBIC-ACID; SILICON; PARACETAMOL; ELECTRODE; NANOCOMPOSITE; VOLTAMMETRY;
D O I
10.1016/j.talanta.2014.12.028
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A porous silicon/palladium nanostructure was prepared and used as a new electrode material for the simultaneous determination of acetaminophen (ACT) and codeine (COD). Palladium nanoparticles were assembled on porous silicon (PSi) microparticles by a simple redox reaction between the Pd precursor and PSi in an aqueous solution of hydrofluoric acid. This novel nanostructure was characterized by different spectroscopic and electrochemical techniques including scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, fourier transform infrared spectroscopy and cyclic voltammetry. The high electrochemical activity, fast electron transfer rate, high surface area and good antifouling properties of this nanostructure enhanced the oxidation peak currents and reduced the peak potentials of ACT and COD at the surface of the proposed sensor. Simultaneous determination of ACT and COD was explored using differential pulse voltammetry. A linear range of 1.0-700.0 mu mol L-1 was achieved for ACT and COD with detection limits of 0.4 and 0.3 mu mol L-1, respectively. Finally, the proposed method was used for the determination of ACT and COD in blood serum, urine and pharmaceutical compounds. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:745 / 753
页数:9
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