聚中性红修饰玻碳电极的制备及应用

Preparation and Application of Poly (Neutral Red) Modified Glassy Carbon Electrode

通过循环伏安法（CV）对聚中性红修饰玻碳电极的制备方法进行了研究，同时研究了谷氨酸在聚中性红修饰玻碳电极上的电化学行为。结果表明，聚中性红修饰玻碳电极对谷氨酸有明显的伏安响应，在电位范围为-0.8-0 V、扫描速率为100 mV·s^-1的条件下，谷氨酸在该修饰电极上产生一对氧化还原峰，谷氨酸在5.0×10^-6-2.0×10^-4 mol·L^-1浓度范围内与峰电流呈良好的线性关系，检出限（S/N ＝3）为2.0×10^-6 mol·L^-1。据此，建立了谷氨酸的电化学分析方法。

In this paper,the poly（neutral red）modified glassy carbon electrode were prepared by cyclic vol-tammetry method.And the electrochemical behaviors of glutamic acid on the modified electrode were studied.It was found that the modified electrode had effective voltammetry response to glutamic acid.There was a redox peak of glutamic acid on the modified electrode at the potential range of -0.8-0 V with scaning rate of 100 mV·s^-1 .The concentration of glutamic acid had a good linear relationship with peak current at the range of 5.0×10^-6 -2.0×10^-4 mol·L^-1 ,and the detection limit was 2.0×10^-6 mol·L^-1 （S/N =3）.Accordingly,the determination of glutamic acid by electrochemical method was established.