Investigation of voltammetric enzyme-linked immunoassay based on new system of ODA-H_2O_2-HRP

A voltammetric enzyme-linked immunoassay based on a new system of ODA-H2O2-HRP has first been developed and used in the detection of HRP and labelled HRP. By this method, the enzyme-catalyzing reaction of H2O2 oxidizing odianisidine (ODA) couples the electrode-reduction reaction of the oxidizing product of odianisidine, which produces a sensitive polarographic wave at potential of -0.56V (SCE) in Britton-Robinson buffer solution. In using this polarographic wave, a detection limit to HRP is 3.7×10-12g/mL and a linear range 1.0×10-11-2.0×10-9g/mL. And the mechanisms of the coupling reaction and the process of electro-reduction in the ODA-H2O2-HRP voltammetric enzyme-linked immunoassay system have also been carefully studied.     

葡萄糖氧化酶反应体系的动力学性质及在葡萄糖分析中的应用

本文运用紫外－可见光谱仪研究了葡萄糖氧化酶偶联辣根过氧化物酶－邻联茴香胺染料体系的催化动力学性质，通过控制酶和染料的含量，确定了反应呈假一级反应的葡萄糖浓度范围，在此反应体系中，葡萄糖浓度可以通过测定染料吸光度而获得，干扰小，回收率达９７％～１０３％。