用泛醌修饰的碳糊电极作葡萄糖传感器

Glucose Sensor Based on Carbon-paste Electrode Modified With Ubiquinone-Glucose Oxidase

本文选择泛醌作酶电极电子传递体,将它和葡萄糖氧化酶、碳糊混和组成一种新的葡萄糖传感器,电极性能较不含泛醌的电极更优越,峰高i_p与葡萄糖浓度在0.8×10^(-5)～1.6×10^(-4)mol/L范围内呈线性关系。电极灵敏度较高,干扰少,响应快,使用寿命长达三周。

This paper describes a new glucose sensor based on a carbon-paste modified electrode. It consists of ubiquinone and glucose oxidase into a carbon-paste matrix resulting in an amperometric biosensor for sensing glucose with linear concentration range of 1. 0×10^(-5)-1.6×10^(-4) mol/L. In comparison with the carbon paste electrode without ubiqinone, the developed electrode has high sensitivity, less interference, rapid response and long lifetime.