中文摘要：

以壳聚糖（CTS）为石墨烯的分散剂,将石墨烯修饰于玻碳电极（GCE）表面,然后通过循环伏安法（CV）在石墨烯修饰的电极表面电聚合L-谷氨酸,制备了石墨烯-L谷氨酸复合膜修饰电极,并利用该修饰电极研究双酚A（BPA）的电化学行为。结果表明,修饰电极对BPA有较好的电催化作用,在pH=6.5的磷酸盐缓冲溶液（PBS）中,BPA在修饰电极上有一个明显的氧化峰,峰电流与其浓度在1.0×10-5~8.0×10-5 mol/L与8.0×10-5~8.0×10-4 mol/L范围内呈现良好的线性关系。

英文摘要：

The grapheme-L-glutamate electrode was prepared by modified graphene used chitosan（CTS）as dispersion and polymerizated with L-glutamic acid by cyclic voltammetry（CV）.The electrochemical behavior of bisphenol A（BPA）at this electrode was investigated.The results showed that electrocatalytic activity of BPA on a modified glassy carbon electrode was better,in pH=6.5 phosphate buffer solution（PBS）,and BPA had an obvious oxidation peak at the modified electrode.There was an excellent linearity between oxidation current and concentration of BPA in the range of 1.0×10-5 to 8.0×10-5 mol/L and 8.0×10-5 to 8.0×10-4 mol/L.