β-环糊精功能化石墨烯修饰电极同时测定邻硝基苯酚与对硝基苯酚  

Simultaneous Detection of o-Nitrophenol and p-Nitrophenol Using a β-Cyclodextrin Functionalized Graphene Modified Glassy Carbon Electrode

作　　者：邓培红 梁姣丽 陈冬儿 蔡芬 黎秋燕 王婷 DENG Pei-hong;LIANG Jiao-li;CHEN Dong-er;CAI Fen;LI Qiu-yan;WANG Ting(Key Laboratory of Functional Metal-Organic Compounds of Hunan Province,College of Chemistry and Materials Science,Hengyang Normal University,Hengyang 421008,China)

机构地区：[1]衡阳师范学院化学与材料科学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：《分析测试学报》2018年第2期204-210,共7页Journal of Instrumental Analysis

基　　金：湖南省自然科学基金资助项目(2016JJ4010);湖南省"光电信息技术"应用基础研究基地开放基金资助项目(GD16K02);绿色包装与生物纳米技术应用湖南省重点实验室对外开放基金资助项目(GPBN-2015-1);衡阳师范学院大学生课外学术科技作品竞赛重点项目(校科字[2017]号-8)

摘　　要：通过滴涂法制备了β-环糊精功能化石墨烯修饰玻碳电极(β-CD-GR/GCE),采用循环伏安法和二阶导数线性扫描伏安法研究了邻硝基苯酚(o-NP)和对硝基苯酚(p-NP)在该修饰电极上的电化学行为。实验结果表明,在该修饰电极上o-NP和p-NP的还原电流显著增加,两还原峰得到有效分离。在优化条件下,使用二阶导数线性扫描伏安法对o-NP和p-NP进行定量分析,线性范围分别为0.2~10μmol/L和0.06~10μmol/L,检出限分别为0.08μmol/L和0.02μmol/L。该法可用于环境水样中o-NP和p-NP的快速准确测定。Aβ-cyclodextrin functionalized graphene modified glassy carbon electrode(β-CD-GR/GCE)was prepared by drop-coating method.The electrochemical behaviors of o-nitrophenol(o-NP)and p-nitrophenol(p-NP)on the modified electrode were investigated by cyclic voltammetry and second-order derivative linear sweep voltammetry.Theβ-CD-GR/GCE showed an excellent electrocatalytical effect on the reduction of p-NP and o-NP.Besides,high resolution capacity to p-NP and o-NP was obtained.Under the optimized conditions,second-order derivative linear sweep voltammetry was utilized for the determination of p-NP and o-NP.There were good linearities for o-NP and p-NP in the concentration ranges of 0.2-10μmol/L and 0.06-10μmol/L with detection limits(S/N=3)of 0.08μmol/L and 0.02μmol/L,respectively.The proposed method could be applied in the simultaneous determination of o-NP and p-NP in environmental water samples with rapidness and accuracy.

关 键 词：β-环糊精功能化石墨烯 修饰电极 邻硝基苯酚 对硝基苯酚 电化学行为 测定 

分 类 号：O657.1[理学—分析化学]