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首页> 外文期刊>Electroanalysis >Antibiotic detection in urine using electrochemical sensors based on vertically aligned carbon nanotubes
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Antibiotic detection in urine using electrochemical sensors based on vertically aligned carbon nanotubes

机译：使用基于垂直排列的碳纳米管的电化学传感器检测尿液中的抗生素

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摘要

A sensitive way to determine levofloxacin using a sensor based on vertical aligned carbon nanotubes is described. The morphology and the electrochemical performance of the electrodes were characterised by atomic force microscopy, cyclic voltammetry and square wave voltammetry. A scan-rate study and electrochemical impedance spectroscopy showed that the levofloxacin oxidation product is adsorbed on the electrode surface. Differential pulse voltammetry in phosphate-buffer solution allowed the development of a method to determine levofloxacin levels in the range of 1.0-10.0μmolL~(-1), with a detection limit of 75.2nmolL~(-1). The proposed sensor was successfully applied in the determination of levofloxacin in urine, and the obtained results were in full agreement with those from the HPLC procedure.
机译：描述了使用基于垂直排列的碳纳米管的传感器确定左氧氟沙星的灵敏方法。用原子力显微镜，循环伏安法和方波伏安法表征了电极的形貌和电化学性能。扫描速率研究和电化学阻抗谱显示左氧氟沙星氧化产物吸附在电极表面。磷酸盐缓冲溶液中的差动脉冲伏安法开发了一种测定左氧氟沙星水平在1.0-10.0μmolL〜（-1）范围内的方法，检测限为75.2nmolL〜（-1）。所提出的传感器已成功地用于尿液中左氧氟沙星的测定，所获得的结果与HPLC方法的结果完全一致。

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