痕量2,4-二硝基苯酚的电化学检测及其反应机理的研究  

Determination of trace 2,4-dinitrophenol with electrochemical method and the reaction mechanism research

作　　者：王晓岗 樊雅娟[1] 张希胜[2] 吴庆生[1] 丁亚平[3] 

机构地区：[1]同济大学化学系,上海200092 [2]同济大学高教研究所,上海200092 [3]上海大学化学系,上海200444

出　　处：《黑龙江大学自然科学学报》2007年第2期164-167,共4页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(20471042);教育部博士点基金资助项目(20040247045)

摘　　要：在pH5．5HAc—NaAc缓冲溶液中研究了2，4-二硝基苯酚在玻碳电极、碳纳米管修饰电极、表面活性剂修饰电极上的电化学行为，探讨了其电化学反应机理，建立了痕量2，4-二硝基苯酚的快速检测方法。碳纳米管修饰电极和表面活性剂修饰电极的检测限分别为2．6×10^-7和2．4×10^-7mol·L^-1，用此法对模拟水样进行检测，回收率在97～103％。The electrochemical behaviors of 2,4 - dinitrophenol were investigated at various electrodes, including glassy carbon electrode, carbon nanotube modified electrode and surfactant modified electrode, in pH 5.5 HAc - NaAc buffer. The reaction mechanism was also studied, and a fast and convenient method for the trace detection of 2,4 - dinitrophenol has been established in this paper. The detection limits were estimated to be 2.6 × 10^ -7 mol · L^-1 for carbon nanotube modified electrode and 2. 4 × 10^ -7 mol · L^-1 for surfactant modified electrode. This method was applied in the determination of 2,4 -dinitrophenol in model water sample, and the recovery was from 97% to 103%.

关 键 词：2 4-二硝基苯酚 电化学行为 机理 测定 

分 类 号：O646.5[理学—物理化学]