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首页> 外文期刊>Electroanalysis >Poly(Taurine-Glutathione)/Carbon Nanotube Modified Glassy Carbon Electrode as a New Levofloxacin Sensor
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Poly(Taurine-Glutathione)/Carbon Nanotube Modified Glassy Carbon Electrode as a New Levofloxacin Sensor

机译：聚（牛磺酸 - 谷胱甘肽）/碳纳米管改性玻璃电极作为新的左氧氟沙星传感器

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摘要

A new highly sensitive and selective electrochemical levofloxacin sensor based on co-polymer-carbon nanotube composite electrode was developed. Taurine and Glutathione were electrochemically co-polymerized on multiwalled carbon nanotubes modified glassy carbon electrode (Poly(TAU-GSH)/CNT/GCE) and used as a levofloxacin sensor in pH 6 phosphate buffer solution. The new composite electrode surfaces were characterized by scanning electron microscopy, atomic force microscopy and electrochemical impedance spectroscopy. Under the optimized conditions, two linear segments were obtained for increasing LEV concentrations between 20 nmol L-1-1 mu mol L-1 and 1.5 mu mol L-1-55 mu mol L-1 LEV with a detection limit of 9 nmol L-1 using amperometry. Poly(TAU-GSH)/CNT/GCE exhibited high sensitivity, selectivity with good stability. The new sensor was employed for real samples of LEV tablets and urine. Promising results were obtained with good accuracy which were also in accordance with LC-MS/MS analysis.
机译：开发了一种基于共聚物 - 碳纳米管复合电极的新的高敏感和选择性电化学左氧氟沙星传感器。牛磺酸和谷胱甘肽在多壁碳纳米管上电化学共聚在多壁碳纳米管上改性玻璃碳电极（Poly（Tau-GSH）/ CNT / GCE），并用作pH6磷酸盐缓冲溶液中的左氧氟沙星传感器。通过扫描电子显微镜，原子力显微镜和电化学阻抗光谱，表征新的复合电极表面。在优化的条件下，获得两个线性段，用于增加20nmol L-1-10mol L-1和1.5μmL1-1-55μmMolL-1 Lev之间的LeL浓度，检测限为9 nmol L. -1使用安培测定。 Poly（Tau-GSH）/ CNT / GCE表现出高灵敏度，选择性稳定性良好。新传感器用于Lev片剂和尿液的真实样品。获得了有希望的结果，具有良好的精度，也根据LC-MS / MS分析。

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