一种新型卟啉修饰电极的循环伏安研究及溶解氧的测定  

A Novel Porphyrin Modified Carbon Electrode and Its Application for Cyclic Voltammetric Determination of Dissolved Oxygen

作　　者：张水锋[1] 王立世[1] 党志[1] 邓雪蓉[2] 胡和平[1] 

机构地区：[1]华南理工大学环境科学与工程学院 [2]华南理工大学化学科学学院,广州510640

出　　处：《分析科学学报》2006年第3期279-282,共4页Journal of Analytical Science

基　　金：国家自然基金(No.20475018)

摘　　要：本文将尾式金属卟啉氯化5-邻（N-咪唑）丁氧基苯基10，15，20三苯基卟啉Mn（Ⅲ）（Mn（Ⅲ）（ImBPTPP）C1）修饰于玻碳电极表面，用循环伏安法（CV）研究了修饰电极的电化学性质，并用微分脉冲伏安法（DPV）测定水中溶解氧的含量。本法的检出限为0．1mg／L，线性范围为0．38～12mg／L，相关性系数R=0．999（n=11），实际样品测定的相对标准偏差（RSD）为1.43％（n=5）。该修饰电极有望作为检测溶解氧的传感器。The electochemical properties of carbon electrode modified by a tailed manganese （Ⅲ） porphyrin （Mn（ Ⅲ ） porphyrin （Mn（ Ⅲ ） （ImBPTPP）Cl） was studial by cyclic vohammograms. A serials of differential pulse vohammety （DPV） data performed by the modified electrode were presented. An excellent linearity was obtained in the range of 0. 38～12 mg/L, and R=0. 999. The modified electrode was succesfully applied to determinationt of the dissolved oxygen in waste water, and the accuracy was verified by Winkler method. It is expected that this modified electrode can be used as a dissolved oxygen sensor.

关 键 词：锰卟啉 修饰电极 溶解氧 DPV CV 

分 类 号：O657.15[理学—分析化学]