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首页> 外文期刊>Electroanalysis >Fe3O4@SiO2-PANI-Au Nanocomposite Prepared for Electrochemical Determination of Quercetin in Food Samples and Biological Fluids
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Fe3O4@SiO2-PANI-Au Nanocomposite Prepared for Electrochemical Determination of Quercetin in Food Samples and Biological Fluids

机译:Fe3O4 @ SiO2-Pani-Au纳米复合物用于电化学测定食品样品和生物液中的槲皮素

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摘要

A new electrochemical sensor based on Fe3O4@SiO2-PANI-Au nanocomposite was fabricated for modification of glassy carbon electrode (Fe3O4@SiO2-PANI-Au GCE). The Fe3O4@SiO2-PANI-Au nanocomposite was characterized by TEM, FESEM-EDS-Mapping, XRD, and TGA methods. The Fe3O4@SiO2-PANI-Au GC electrode exhibited an acceptable sensitivity, fast electrochemical response, and good selectivity for determination of quercetin. Under optimal conditions, the linear range for quercetin concentrations using this sensor was 1.0x10(-8) to 1.5x10(-5) mol L-1, and the limit of detection was 3.8x10(-9) mol L-1. The results illustrated that the offered sensor could be a possible alternative for the measurement of quercetin in food samples and biological fluids.
机译:制造了一种基于Fe3O4 @ SiO2-Pani-Au纳米复合材料的新型电化学传感器,用于改性玻碳电极(Fe3O4 -SiO2-Pani-Au GCE)。 通过TEM,FESEM-EDS映射,XRD和TGA方法表征Fe3O4 @ SiO2-Pani-Au纳米复合材料。 Fe3O4 @ SiO2-Pani-Au GC电极表现出可接受的敏感性,快速电化学响应和良好的选择性,用于测定槲皮素。 在最佳条件下,使用该传感器的槲皮素浓度的线性范围为1.0×10(-8)至1.5×10(-5)mol L-1,并且检测限为3.8x10(-9)mol L-1。 结果表明,所提供的传感器可以是在食品样品和生物流体中测量槲皮素的可能替代方案。

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