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首页> 外文期刊>International Journal of Electrochemical Science >Preparation of Keggin-type Polyoxomolybdate and its Application as Electrochemical Sensor for Detection of Levodopa
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Preparation of Keggin-type Polyoxomolybdate and its Application as Electrochemical Sensor for Detection of Levodopa

机译：Keggin型聚氧钼钼酸盐的制备及其作为电化学传感器检测左旋多巴的应用

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摘要

In this study, a levodopa (LDA) electrochemical sensor based on Keggin-type polyoxometalate was constructed. First, the silicomolybdenum heteropoly acid SiMo12 imidazole was synthesized by hydrothermal method. Fourier transform infrared absorption spectrometry (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to characterize the synthetic material. Then the SiMo12 imidazole was dropped onto the surface of a glassy carbon electrode (GCE) to construct an electrochemical sensor for detecting LDA. The sensing interface of the modified electrode was studied by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under the optimal experimental conditions, the constructed electrochemical sensor had good detection performance for LDA with a linear range of 1×10-7 mol/L ~ 8×10-6 mol/L and a limit of detection (LOD) of 0.48×10-7 mol/L. Satisfactory results were also obtained in the detection of LDA tablets.
机译：在该研究中，构建了基于Keggin型聚氧酸盐酸盐的左旋多巴（LDA）电化学传感器。 首先，通过水热法合成二氧化胺杂酸杂酸SiMO12咪唑。 傅里叶变换红外吸收光谱法（FTIR），X射线衍射（XRD），扫描电子显微镜（SEM）和原子力显微镜（AFM）用于表征合成材料。 然后将SiMO12咪唑滴到玻碳电极（GCE）的表面上，以构建用于检测LDA的电化学传感器。 通过循环伏安法（CV）和电化学阻抗光谱（EIS）研究了改性电极的感测界面。 在最佳的实验条件下，构造的电化学传感器对LDA具有良好的检测性能，线性范围为1×10-7mol / L〜8×10-6mol / L和0.48×10的检测极限（LOD） -7 mol / l。 在检测到LDA片剂中也获得了令人满意的结果。

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