摘要
研究了品红(FB)聚合膜修饰玻碳电极的制备及其电化学性质,并用于抗坏血酸(AA)的测定。在 pH7.0的磷酸盐缓冲溶液中,AA 在聚品红修饰玻碳电极上产生一灵敏的氧化峰,峰电流与 AA 的浓度在3.0×10^(-5)～8.7×10^(-3)mol/L 范围内呈良好的线性关系,检出限为 1.0×10^(-5)mol/L。该电极重现性良好,用于维生素 C 片中 AA 的测定,获得满意结果。
The fabrication and electrochemical characteristics of poly fuchsine modified glass carbon electrode were investigated.The electrode was applied to the determination of ascorbic acid.In PBS buffer of pH 7.0,a sensitive ox- idation peak was observed.The current is proportional to the concentration of ascorbic acid in the range of 3.0×10^(-5)～ 8.7×10^(-3) mol/L with a detection limit of 1.0×10^(-5) mol/L.The modified electrode has good repeatability. It has been applied to the quantitative determination of aseorbic acid in tablet.
出处
《化学传感器》
CAS
2005年第1期49-51,共3页
Chemical Sensors
基金
国家自然科学基金(29705001)
重庆市自然科学基金(CSTC-2004BB4149)资助
