ZnSe-C_(60)修饰玻碳电极用于测定水中甲萘酚的含量  

Application of ZnSe-C_(60) Modified Glassy Carbon Electrode to Determination ofα-Naphthol in Water

作　　者：汪雪融 田利 董天琪 吴可心 胡玥 WANG Xuerong;TIAN Li;DONG Tianqi;WU Kexin;HU Yue(College of Chemistry , Changchun Normal University ,Changchun 130032, China)

机构地区：[1]长春师范大学化学学院,长春130032

出　　处：《理化检验（化学分册）》2019年第3期266-269,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：吉林省教育厅十三五科学研究项目(JJKH20181173KJ)

摘　　要：将C_(60)分散在ZnSe量子点溶液中,将此悬浮液滴涂于玻碳电极表面,自然晾干后制得ZnSe-C_(60)修饰电极,以循环伏安法研究了甲萘酚在此修饰电极上的电化学行为。结果表明:与ZnSe修饰电极和C_(60)修饰电极相比较,甲萘酚在ZnSe-C_(60)修饰电极表面的电化学响应效果最好。以pH 8.0磷酸盐缓冲溶液为底液,在1.0～-1.0V电压范围内,以0.10V·s^(-1)的扫描速率,采用微分脉冲伏安法对甲萘酚进行测定,甲萘酚的浓度在3.0×10^(-6)～1.5×10^(-5) mol·L^(-1)内与其氧化峰电流呈线性关系,检出限(3S/N)为1.0×10^(-6) mol·L^(-1)。方法应用于水样中甲萘酚的测定,结果与标准方法测定值相符,加标回收率在96.5%～104%之间,测定值的相对标准偏差(n=5)在2.3%～4.4%之间。Fullerene (C60) was dispersed in ZnSe quantum dot solution, and the obtained suspention was dropped on the surface of glass carbon electrode. After drying naturally, a ZnSe-C60 modified electrode was obtained. The electrochemical behavior of α-naphthol at the modified electrode were investigated by cyclic voltammetry. As shown by the results, compared with ZnSe modified electrode and C60 modified electrode, the best electrochemical response of α-naphthol on the surface of ZnSe-C60 modified electrode was found.α-naphthol was determined by differential pulse voltammetry in the voltage range of 1.0-^-1.0 V, at a scan rate of 0.10 V·s-1, using phosphate buffer solution (pH 8.0) as the base solution. Linear relationship was found between oxidation peak current with concentration of α-naphthol in the range of 3.0×10-6-1.5×10-5mol·L-1, with detection limit (3S/N) of 1.0×10-6mol·L-1. The method was applied to the determination of α-naphthol in water samples, giving results in consistency with those obtained by the standard method. Values of recovery obtained by standard method were in the range of 96.5%-104%, and the relative standard deviations (n=5) of the measured values were in the range of 2.3%-4.4%.

关 键 词：甲萘酚 修饰电极 ZNSE量子点 富勒烯 循环伏安法 微分脉冲伏安法 

分 类 号：O657.1[理学—分析化学]