【作者】 段香芝； 张嫚； 许春萱；

【Author】 Duan Xiang-zhi;Zhang Man;Xu Chun-xuan;Department of Chemistry,Xinyang Normal University;

【机构】 信阳师范学院化学化工学院；

【摘要】 制备乙炔黑/聚L-半胱氨酸复合材料修饰电极,在磷酸盐缓冲溶液中,利用循环伏安法探究DA在该复合材料修饰电极上的电化学性质。实验结果表示,DA在乙炔黑/聚L-半胱氨酸复合材料修饰电极上峰电流被显著增强。不同浓度的多巴胺利用差分脉冲伏安法测定时,测得DA在6~167μmol/L浓度范围内与氧化峰电流有着良好的线性关系,其线性方程为:I(μA)=-0.273c(μmol/L)-7.133、相关系数是0.998。更多还原

【Abstract】 Using drop electrodeposition coating method and prepared acetylene black / L-Cys nanoparticle composite modified electrodes.In phosphate-buffered saline（PBS） in the presence of,and application the cyclic voltammetry of dopamine（DA） on the electrochemical behavior of the composite material electrode.The results show that,the AB/ L-Cys /GCE decorated electrodes improved the current of DA significantly.Then differential pulse voltammetry was used for the determination of DA.It turned out that concentration had a better linear relation with peak point current when the concentration of DA ranged from 6.0×10^-6 mol/L to 1.67×10^-4 mol/L and the linear equation was I（μA） =- 0.273c（μmol/L）- 7.133 and the correlative coefficients was 0.998.更多还原