复合修饰电极同时测定2,7-萘二酚与双酚A  

Simultaneous Determination of 2,7-Naphthalenediol and Bisphenol A Based on Composite Modified Electrode

作　　者：贺灵芝 旷文安[2] 李俊华[3] HE Ling-zhi;KUANG Wen-an;LI Jun-hua(School of Medicine,Hunan Polytechnic of Environment and Biology,Hengyang 421005 China;The First Affiliated Hospital,University of South China,Hengyang 421001 China;Key Laboratory of Functional Metal-Organic Compounds of Hunan Province,Hengyang Normal University,Hengyang 421008 China)

机构地区：[1]湖南环境生物职业技术学院医药技术学院,湖南衡阳421005 [2]南华大学附属第一医院,湖南衡阳4210012 [3]衡阳师范学院功能金属有机化合物湖南省重点实验室,湖南衡阳421008

出　　处：《科技创新与生产力》2020年第3期51-54,共4页Sci-tech Innovation and Productivity

基　　金：功能金属有机化合物湖南省重点实验室开放基金项目(MO19K09);湖南环境生物职业技术学院支柱工程项目(〔2019〕33号);湖南省教育厅重点项目(18A336)。

摘　　要：采用超声波法制备了β-环糊精/石墨烯纳米复合材料(CD-GN),通过红外光谱、紫外-可见分光光度法和扫描电镜分析,表明CD成功地附着在GN上。将CD-GN修饰玻碳电极用于2,7-萘二酚和双酚A的同时电化学测定,结果表明:修饰电极对2,7-萘二酚和双酚A有更强的电催化氧化和富集作用。在优化条件下,2,7-萘二酚和双酚A在3.0×10^-7~2.5×10^-5mol/L和5.0×10^-8~1.0×10^-4mol/L浓度范围内分别与其峰电流成明显线性关系,检出限低。在实际水样检测中回收率为97.0%~102.8%。β-cyclodextrin/graphene nanocomposites(CD/GN)were prepared by simple ultrasonic method.The results of infrared spectroscopy,ultraviolet-visible spectrophotometry and scanning electron microscopy show that CD has been successfully attached to GN.CD/GN modified glassy carbon electrode was applied to simultaneously electrochemical determination of 2,7-naphthalenediol and bisphenol A.The results show that the modified electrode has stronger electrocatalytic oxidation and enrichment effect on 2,7-naphthalenediol and bisphenol A.Under the optimum conditions,the peak currents of 2,7-naphthalenediol and bisphenol A were linearly correlated within the concentration ranges of 3.0×10^-7~2.5×10^-5 mol/L and 5.0×10^-8~1.0×10^-4 mol/L with the low detection limits,respectively.The electrochemical sensor has been applied to the determination in real water samples with recoveries between 97.0%and 102.8%.

关 键 词：电化学传感器 2 7-萘二酚 石墨烯 同时测定 

分 类 号：O657.1[理学—分析化学]