摘要
系统研究了聚萘胺膜与Ａｇ、Ｈｇ（２＋）等十余种金属离子的络合特性。以循环伏安法、交流阻抗分析等方法研究了Ａｇ－ＰＮＡ电极对抗坏血酸（Ｈ２Ａ）氧化的催化作用，提出了电极反应的可能机理。Ａｇ－ＰＮＡ电极可用于测定试样中的Ｈ２Ａ含量。
A systematic study on the behavior of a chemically modified electrode with poly(1-naphthylamine) membrane complexed with various metal ions,such as silver,mercury etc. is described. The electro-catalytic characteristics of the Ag-PNA electrode to the oxidation of ascorbic acid have been studied by cyclic voltammetry,a. c. impedance analysis and other methods. It is suggested that the electro-catalytic reaction of ascorbic acid is controlled by diffusion. A possible mechanism for the ascorbic acid oxidation is proposed. The Ag-PNA electrode can be used for the determination of ascorbic acid in pharmaceutical samples.
出处
《分析测试学报》
CAS
CSCD
1996年第3期31-36,共6页
Journal of Instrumental Analysis
基金
国家自然科学基金
关键词
聚萘胺膜
化学修饰电极
络合物
催化
Chemically modified electrode, Poly(1-naphthylamine) membrane.
