双酚A在壳聚糖石墨烯复合膜电化学传感器上的电化学行为及测定  

The electrochemical behavior and determinatian of bisphenol a on an electrochemical sensor modified by chitosan and graphene

作　　者：匡云飞[1] 邹建陵[1] 李薇[1] 周昕[2] 许金生[1] 冯泳兰[1] 李玉明[1] 

机构地区：[1]衡阳师范学院化学与材料科学系,衡阳421008 [2]南华大学化学化工学院,衡阳421001

出　　处：《分析试验室》2013年第3期33-37,共5页Chinese Journal of Analysis Laboratory

基　　金：湖南省科技厅基金项目(2011FJ3037);湖南省科技计划重点项目(2012FJ2002);湖南省重点学科基金项目资助

摘　　要：采用hummers法制备了石墨烯,以碳糊电极为基底电极采用滴涂法制备了壳聚糖石墨烯复合膜电化学传感器(CTS/GR/CPE),并利用循环伏安法和线性扫描溶出伏安法研究了双酚A在电化学传感器上的电化学行为。在pH 7.4的磷酸盐缓冲液中,于-0.1V富集180s后,该电化学传感器对双酚A具有良好的电催化作用,于0.564V处有一灵敏的氧化峰,线性范围为1.00×10-6～7.00×10-5mol/L和7.00×10-5～1.00×10-3mol/L,检出限(S/N=3)为1.00×10-7mol/L。方法用于塑料制品中溶出双酚A的测定,回收率为96.4%～100.5%。In the paper, graphene has been synthesized by Hummers method. A chitosan （CTS） and graphene （GR） modified carbon paste electrode was prepared by dispensing method, and the electrochemical behavior of bisphenol A （BPA） on the electrochemical sensor modified by chitosan and grapheme （CTS/GR/CPE） was investigated by cyclic voltammetry （CV） and liner sweep stripping voltammetry （LSSV）. The studies indicated that bisphenol A showed a good electroeatalytic response at the CTS/GR/CPE in Na2 HPO4-NaH2PO4 （pH = 7.4） yielding one sensitive oxidation peak at 0. 564 V after an accumulation potential of-0. 1 V for 110s accumulation. A linear response of bisphenol A was obtained over the range from 1.00 × 10^-6 to 7.00 × 10^-5 mol/L and 7.00 × 10^-5 to 1.00 × 10^-3mol/L, with a detction limit of 1.00 × 10^-7moL/L. This method was applied in the determination of dissolved bisphenol A in plastics with recoveries of 96. 4% - 100. 5%.

关 键 词：石墨烯 壳聚糖 双酚A 循环伏安法 线性扫描溶出伏安法 

分 类 号：O657.1[理学—分析化学]