A highly sensitive electrochemical sensor based TiO₂-nanorods modified carbon paste electrode (CPE/TiO₂ NRs) for the determination of bisphenol A (BPA) in bottled water was successfully studied. The synthesized TiO₂ NRs and the modified sensor were fabricated by simple methods and characterized by Transmission Electron Microscopy (TEM), Scanning Electron Microscope-Energy Dispersive X-ray analysis (SEM-EDX), X-ray Diffraction (XRD), and Fourier Transform Infra-Red (FTIR). The electrocatalytic activity of the modified sensor was studied by Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) in a 0.01 M [Fe(CN)₆]^3−/4- in 0.1 M NaCl. The composition of TiO₂ NRs, pH of BPA solution, and scan rate have been investigated. The linear range of detection for BPA using the CPE/TiO₂ NRs was found to be between 6 × 10⁻⁴ M and 10⁻² M with a limit of detection of 0.08 μM. The modified sensor was successfully applied for the determination of BPA in a real sample bottled drinking water with excellent stability, repeatability, and good agreement results compared to other methods.

成功地研究了一种基于高灵敏度电化学传感器的TiO _2-纳米修饰碳糊电极（CPE / TiO ₂ NRs），用于测定瓶装水中的双酚A（BPA）。通过简单的方法制备了合成的TiO ₂ NRs和改进的传感器，并通过透射电子显微镜（TEM），扫描电子显微镜-能量色散X射线分析（SEM-EDX），X射线衍射（XRD）和傅里叶进行了表征。转换红外（FTIR）。通过循环伏安法（CV）和电化学阻抗谱（EIS）在0.1 M NaCl中的0.01 M [Fe（CN）₆ ] ^{3- / 4-}中研究了修饰传感器的电催化活性。TiO ₂的组成已经研究了NR，BPA溶液的pH值和扫描速率。发现使用CPE / TiO ₂ NRs检测BPA的线性范围在6×10 ^-4 M和10 ^-2  M之间，检测限为0.08μM。改进的传感器已成功应用于实际瓶装饮用水样品中的BPA测定，与其他方法相比，具有出色的稳定性，可重复性和良好的一致性结果。