化学学报 ›› 1997, Vol. 55 ›› Issue (11): 1121-1129. 上一篇    下一篇

研究论文

OT-H2O2-HRP伏安酶联免疫分析新体系

焦奎;张书圣;韦璐;刘澄凡   

  1. 青岛化工学院应用化学系
  • 发布日期:1997-11-15

Investigation of voltammetric enzyme-linked immunoassay based on new system of OT-H2O2-HRP

JIAO KUI;ZHANG SHUSHENG;WEI LU;LIU CHENGFAN   

  • Published:1997-11-15

本文首次提出了邻联甲苯胺(OT)-H2O2-辣根过氧化物酶(HRP)伏安酶联免疫分析新体系。本方法以线性扫描二阶导数伏安法检测HRP催化H2O2氧化OT的产物, 用于游离HRP和各种HRP标记物测定, 灵敏度比经典的ELISA光度法分别高两个至四个数量级。测定游离HRP的检测限达到1.8×10^-^1^2 g/mL, 线性范围为5.0×10^-^1^2-1.0×10^-^8 g/mL。对此伏安酶联免疫分析新体系的偶合反应机理及电极还原过程也进行了详细的研究。

关键词: 伏安法, 反应机理, 过氧化氢, 偶合反应, 辣根过氧化物酶, 山东省自然科学基金, 邻联甲苯胺, 免疫分析

A voltammetric enzyme-linked immunoassay based on a new system of o-tilidine (OT)-H2O2-horseradish peroxidase (HRP) has firstly been developed. In this method, the enzyme-catalyzing reaction of H2O2 oxidizing OT couples the electro-reduction reaction of the oxidizing product of OT, which produces a sensitive voltammetric wave at potential of -0.58V (vs. SCE) in Britton-Robinson buffer solution. When it is used in the detection of clasical ELISA method, respectively. The detection limit to HRP is 1.8×10^-^1^2 g/mL and the linear range 5.0×10^-^1^2-1.0×10^-^8 g/mL. The mechanism of the voltammetric enzyme-linked immunoassay system has also been studied in detail.

Key words: VOLTAMMETRY, REACTION MECHANISM, HYDROGEN PEROXIDE, COUPLING REACTION

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