摘要
利用聚孔雀石绿薄膜修饰电极(PMGE)对磺胺醋酰钠(SS)的电催化作用,建立一种新的对SS含量进行定量分析的电化学分析方法.在0.2mol/LKH2PO4-Na2HPO4(pH6.86,PBS)缓冲溶液中,以PMGE为工作电极,在0.4-1.2V电位范围内以100mV/s的扫描速率进行循环伏安扫描,根据循环伏安图上催化峰电流的大小,对SS进行定量分析.结果表明,SS的浓度在5.0×10-5mol/L^1.5×10-3mol/L范围内与氧化峰电流呈现出良好的线性关系,线性相关系数为:CR=﹣0.9990,检测限达2.0×10-6mol/L.8次平行样品测定结果的相对标准偏差不大于1.5%,样品回收率为98.2%~107.6%.将该法用于实际样品中SS的定量分析,得到满意结果.
To setted up a new electroanalysis method for determining Sulfacetamice Sodium（SS） using the electrocatalysis action of PMGE on SS. In the system of pH= 6.86 PBS buffer solution, the CV figures were obtained for cyclic scanning from 0.4 V to 1.2 V with the working electrode of PMGE and scan rate of 100 mV/s. The contents of Aciclovir was quantitative analyzed with the value of catalysis peak currents in CV figures. The peak current was proportional to the concentration of Aciclovir in the range of 5.0×10^-5 tool/L- 1.5 ×10^-3 mol/L （CR =0.999 0） with a detection limit of 6.0×10^-6 mol/L. The relatively standard deviation（RSD） was less than 1.5%（n= 8）, and the recovery was 95.6 %-105.4 %. It has been successfully applied to the quantitative analysis of SS in real samples with satisfaction results.
出处
《湖南文理学院学报（自然科学版）》
CAS
2009年第3期57-58,72,共3页
Journal of Hunan University of Arts and Science(Science and Technology)
关键词
聚孔雀石绿
修饰电极
磺胺醋酰钠
电催化
Poly（malachite green）
Modified Electrode
Sulfacetamice Sodium
Electrocatalysis
