Department of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, PR China.
Department of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, PR China.
Food Chem. 2014 Aug 15;157:490-7. doi: 10.1016/j.foodchem.2014.02.074. Epub 2014 Feb 27.
Herein, a novel electrochemical sensor based on an acetylene black paste electrode modified with molecularly imprinted chitosan-graphene composite film for sensitive and selective detection of bisphenol A (BPA) has been developed. Several important parameters controlling the performance of the sensor were investigated and optimised. The imprinted sensor offers a fast response and sensitive BPA quantification. Under the optimal conditions, a linear range from 8.0 nM to 1.0 μM and 1.0 to 20 μM for the detection of BPA was observed with the detection limit of 6.0 nM (S/N=3). Meanwhile, the fabricated sensor showed excellent specific recognition to template molecule among the structural similarities and coexistence substances. Furthermore, this imprinted electrochemical sensor was successfully employed to detect BPA in plastic bottled drinking water and canned beverages.
本文报道了一种基于乙炔黑糊电极修饰的分子印迹壳聚糖-石墨烯复合薄膜电化学传感器，用于灵敏和选择性检测双酚 A（BPA）。优化了影响传感器性能的几个重要参数。印迹传感器具有快速响应和灵敏的 BPA 定量检测性能。在最佳条件下，检测 BPA 的线性范围为 8.0 nM 至 1.0 μM 和 1.0 至 20 μM，检测限为 6.0 nM（S/N=3）。同时，该制备的传感器对模板分子具有优异的结构相似性和共存物质的特异性识别能力。此外，该印迹电化学传感器成功地用于检测塑料瓶装饮用水和罐装饮料中的 BPA。
