双酚A在石墨烯-L-谷氨酸修饰电极上的电化学行为研究  

Electrochemical behavior of bisphenol A at a graphene-l-glutamate modified glassy carbon electrode

作　　者：杨婕[1] 

机构地区：[1]济宁医学院生物纳米技术与医学工程研究所,山东济宁272067

出　　处：《济宁医学院学报》2013年第6期396-399,共4页Journal of Jining Medical University

基　　金：国家自然科学基金(基金号:21175059);济宁医学院青年科学基金(基金号:JYQ2011KM008)

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。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.

关 键 词：双酚A 石墨烯 L-谷氨酸 壳聚糖 循环伏安法 

分 类 号：O657.1[理学—分析化学]