用Nafion修饰电极测定血红素的研究

用Nafion修饰电极测定血红素的研究 INVESTIGATION ON DETERMINATION OF HAEMATIN WITH MODIFIED GRAPHITE ELECTRODE 鲁贤丹 Lu Xiandan 1 2 3 first-author 李东辉 Li Donghui 1 2 3 曾百肇 Zeng Baizhao 1 2 3 谭鄂 Tan E 1 2 3 周性尧 Zhou Xingyao 1 2 3 武汉大学化学系 武汉大学化学系 Department of Chemistry, Wuhan University Department of Chemistry, Wuhan University 武汉大学化学系,武汉 武汉大学化学系,武汉 ,430072 ,430072 本文研究了氯化高铁血红素在Nafion修饰石墨电极上的电化学行为。在0.12mol·L -1 的酒石酸钾钠溶液中,氯化高铁血红素在线性扫描伏安图上产生一灵敏的阴极波,其导数波的峰电位为—0.65V,峰电流与血红素在1×10 -7 ～1×10 -5 mol·L -1 浓度范围内成线性关系。对有关机理进行了探讨。 The electrochemical properties of haematin were investigated, and a new way to determine the trace amount of haematin has been found. In the solution of 0.12mol/L potassium sodium tartrate, with the Nafion modified graphite electrode, a sensitive cathodic wave of haematin was observed at -- 0.65V. The height of derivative wave was linear with the concentration of haematin from 1×10 -7 to 1×10 -5 mol·L -1 . The influence of some coexistent on the height of the wave was investigated. 血红素 修饰电极 线性扫描伏安法 haematin modified electrode linear sweep voltammetry O657.14 国家自然科学基金(61672102) 1993-02-01 2021-04-01 2