In the present work, we reported the simple way to fabricate an electrochemical sensing platform to detect Bisphenol A (BPA) using galvanostatic deposition of Au on a glassy carbon electrode covered by cetyltrimethylammonium bromide (CTAB). This material (CTAB) enhances the sensitivity of electrochemical sensors with respect to the detection of BPA. The electrochemical response of the modified GCE to BPA was investigated by cyclic voltammetry and differential pulse voltammetry. The results displayed a low detection limit (22 nm) and a linear range from 0.025 to 10 µm along side with high reproducibility (RSD = 4.9% for seven independent sensors). Importantly, the prepared sensors were selective enough against interferences with other pollutants in the same electrochemical window. Notably, the presented sensors have already proven their ability in detecting BPA in real plastic water drinking bottle samples with high accuracy (recovery range = 96.60%–102.82%) and it is in good agreement with fluorescence measurements.

中文翻译：

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基于纳米金/表面活性剂修饰电极的双酚A电化学传感器

在当前的工作中，我们报告了一种简单的方法来制造电化学传感平台，以在由十六烷基三甲基溴化铵（CTAB）覆盖的玻璃碳电极上通过Au的恒电流沉积来检测双酚A（BPA）。这种材料（CTAB）增强了BPA检测方面电化学传感器的灵敏度。通过循环伏安法和差分脉冲伏安法研究了修饰的GCE对BPA的电化学响应。结果显示出低检测限（22 nm）和0.025至10 µ的线性范围 高度可重复使用m（对于七个独立传感器，RSD = 4.9％）。重要的是，准备好的传感器具有足够的选择性，可以抵抗同一电化学窗口中其他污染物的干扰。值得注意的是，所介绍的传感器已经证明了它们能够以很高的准确度（回收率= 96.60％–102.82％）检测实际塑料饮水瓶样品中的BPA，并且与荧光测量值非常吻合。