石墨烯锰卟啉复合电极测定苯二酚异构体  

Determination of dihydroxybenzene isomers by graphene-manganese porphyrin composite electrode

作　　者：秦洪伟[1] 闫彬[1] 王鑫 刘妍 尤国红 QIN Hong-wei;YAN Bin;WANG Xin;LIU Yan;YOU Guo-hong(College of Chemistry and Chemical Engineering,Bohai University,Jinzhou 121013,China;College of Engineering,Bohai University,Jinzhou 121013,China)

机构地区：[1]渤海大学化学化工学院,辽宁锦州121013 [2]渤海大学工学院,辽宁锦州121013

出　　处：《现代化工》2020年第1期225-229,共5页Modern Chemical Industry

基　　金：国家自然科学基金项目(41602351);2019年度辽宁省自然科学基金指导计划项目(2019-ZD-0504)

摘　　要：通过π-π非共价的方式合成了石墨烯-锰卟啉复合材料,并将其修饰到玻碳电极表面,通过差分脉冲伏安法(DPV)实现了对苯二酚异构体的同时测定。结果表明在pH=5.0的乙酸-乙酸钠底液中,一定浓度范围内苯二酚3种异构体的差分脉冲峰电流强度与3种异构体浓度之间呈良好的线性关系,电化学检测的线性范围分别为对苯二酚(HQ)5.0×10^-6~2.0×10^-3mol/L、邻苯二酚(CT)5.0×10^-6~2.0×10^-3 mol/L、间苯二酚(RS)5×10^-6~3×10^-3 mol/L相关系数R分别为0.9995、0.9986、0.9996。表明该方法能灵敏、快速、准确地对3种异构体进行同时测定。Graphene-manganese porphyrin composite materials are synthesized by π-π stacking interaction way and applied on the surface of glassy carbon electrodes.Simultaneous determination of dihydroxybenzene isomers is achieved by means of differential pulse voltammetry(DPV).The results indicate that good linear relationships exist between the checking pulse peak current intensities and the concentrations of three dihydroxybenzene isomers,respectively within a certain concentration range in the sodium acetate solution with a pH value of 5.0.The linear concentration ranges are5.0×10^-6-2.0×10^-3 mol·L^-1 for hydroquinone,5×10^-6-2.0×10^-3 mol·L^-1 for catechol and 5×10^-6-3×10^-3 mol·L^-1 for resorcinol.The correlation coefficients are 0.9995,0.9986,and 0.9996,respectively.It is proved that this method can determine three dihydroxybenzene isomers accurately,quickly and sensitively.

关 键 词：石墨烯 锰卟啉 苯二酚 差分脉冲伏安法 复合材料 

分 类 号：TQ468[化学工程—制药化工] X132[环境科学与工程—环境科学]