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Mesopores Cellular Foam-Based Electrochemical Sensor for Sensitive Determination of Ractopamine

文献类型： 外文期刊

作者： Xie, Liping 1 ; Ya, Yu 1 ; Wei, Liang 2 ;

作者机构： 1.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China

2.Guangxi Teachers Educ Univ, Coll Chem & Mat Sci, Nanning 530001, Peoples R China

关键词： Mesopores cellular foam;Modified electrode;Ractopamine;Linear sweep voltammetry

期刊名称：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE （ 影响因子：1.765； 五年影响因子：1.685 ）

ISSN： 1452-3981

年卷期： 2017 年 12 卷 10 期

页码：

收录情况： SCI

摘要： A mesopores cellular foam (MCF) modified carbon paste electrode (MCF/CPE) was designed for sensitive determination of ractopamine. The as-prepared MCF was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms and pore size distribution plots. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were employed to demonstrate the large electrode surface and the fast electron transfer in the MCF/CPE which showed much better performance for the electrochemical oxidation of ractopamine when compared with the bare carbon paste electrode (CPE). Under optimized conditions, the oxidation peak current was proportional to the ractopamine concentration which was varied between 0.050 and 3.0 mu M, with a detection limit (defined by a signalto-noise ratio of three) of 0.010 mu M. The proposed sensor was applied to determine the ractopamine content in pork samples with satisfactory results.

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