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生物催化膜电极是近年来广泛应用的电化学传感器。它由生物催化剂膜(酶、亚细胞碎片、细菌或哺乳动物和植物的组织切片)和基础感应电极(金属、石墨或离子选择电极)结合构成。生物催化剂用以催化待测底物的反应,而反应物或产物的浓度变化则通过基础电极以电位或电流变化的形式显示出来。酶作为生物催化剂,能灵敏而专一地和许多有机物及无机物作用,特别是能和生物体液中的组分作用。它所催化的反应物或产物(如H~+、CO_2、NH~+_4、H_2O_2、O_2I~-等)又可被金属、石墨、氧电极和离子选
Biocatalytic membrane electrode is a widely used electrochemical sensor in recent years. It consists of a biocatalyst membrane (enzyme, subcellular debris, bacterial or mammalian and plant tissue sections) and a basal sensing electrode (metal, graphite or ion selective electrode). The biocatalyst serves to catalyze the reaction of the substrate under test, and the concentration of the reactant or product is shown by the change of potential or current through the base electrode. Enzymes, as biocatalysts, are sensitive and specific to many organic and inorganic compounds, and in particular, they work with components of biological fluids. It catalyzes the reactants or products (such as H ~ +, CO_2, NH ~ + _4, H_2O_2, O_2I ~ -) can be metal, graphite, oxygen electrode and the ion