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在镀银电极的压电石英晶体表面涂覆甲基丙烯酸甲酯-甲基丙烯酸羟乙酯共聚物涂层,经CNBr活化后固定抗体,用石英晶体微天平技术监测IgM抗原在压电石英晶体上的吸附与解吸过程,研究了免疫反应体系IgM-抗人IgM的反应动力学.结果表明:IgM在压电石英晶体上的键合行为很好地符合Langmuir吸附方程,免疫反应的结合常数Kass为7.10×10 ̄7(mol/L) ̄(-1).在抗原过量情况下为一级反应。计算了IgM免疫反应的活化能Ea和不同温度下的反应速率常数kf.
In the silver plated electrode piezoelectric quartz crystal surface coated with methyl methacrylate - hydroxyethyl methacrylate copolymer coating by CNBr activation after the fixed antibody, with quartz crystal microbalance monitoring IgM antigen in the piezoelectric quartz crystal On the adsorption and desorption process, the immune reaction system IgM-anti-human IgM reaction kinetics. The results show that the bonding behavior of IgM on the piezoelectric quartz crystal well accords with the Langmuir adsorption equation. The binding constant Kass of the immunoreaction is 7.10 × 10 ~ (mol / L) ~ (-1). In the case of excessive antigen level response. The activation energy Ea of IgM immune response and the reaction rate constant kf at different temperatures were calculated.