聚对氨基苯磺酸/石墨烯复合膜修饰玻碳电极测定葡萄糖

Determination of glucose at poly(p-aminobenzene sulfonic acid)/graphene composite modified glassy carbon electrode

制备了对氨基苯磺酸/石墨烯复合膜修饰电极,研究了葡萄糖在该修饰电极上的电化学行为。在0.1 mol/L NaOH溶液中,峰电流与葡萄糖的浓度在1×10-6～5×10-4 mol/L的范围内呈良好的线性关系,检出限为2×10-7 mol/L(S/N=3)。实验结果表明对氨基苯磺酸/石墨烯复合膜显著提高了方法的检测灵敏度。利用该传感器测定了人血清中的葡萄糖,回收率在97.2%～104.1%之间。

A poly （p-aminobenzene suifonic aeid）/graphene composite film modified glassy carbon electrode was fabricated for glucose determination. In 0. 1 mol/L NaOH solution, the peak currents varied linearly with the concentration of glucose in the range of 1×10^-6～5×10^-4mol/L with the detection limit of 2×10^-7mol/L（S/N=3）. It indicated that the composite film obviously improved the sensitivity for the glucose determination. The biosensor was used in the determination of glucose in serum with recoveries ranging from 97.2 % to 104. 1%.