一种新型电极式葡萄糖传感器的研究

Study on a New Type of Amperometric Glucose Sensor

用石墨粉-环氧树脂混合物作为阳极、以钛基RuO2/TiO2涂层材料作为阴极，采用浸漆涂膜法固定葡萄糖氧化酶（COD），构造了一种全新的葡萄糖传感器．该传感器具有对葡萄糖的稳态响应时间短（只有20～40秒）、线性检测范围觉（1．0×10－5～3．0×10－3mol／L）、灵敏度高（1.0×10-4A／（mol·L－1））、及贮存稳定性好等优点．而且制备传感器的电极材料价格低、来源广，可以根据需要加工成任何大小和形状，有很好的应用前景．

The glucose sensor is constructed with the mixutre of graphite powder and epoxy resin as anode and titanium coated by RuO2/TiO2 as cathode. The glucose oxidase is immobilized by dipping the anode into the solutions for a period of time. The response time, the linear range and the sensihvity of this glucose sensor are 20~ 40s,1.0×10-5~ 3 .0 ×10-3mol/L and 1.0× 1.-4A/(mol' L-1 ), respectively. And within 15 days, the response currents have no obvious change. The electrochemical system features low cost and easy machine cutting.