论文部分内容阅读
运用循环伏安法与线性扫描伏安法研究了阿奇霉素在多壁碳纳米管修饰玻碳电极上的电化学行为,建立了一种直接测定阿奇霉素的电化学分析方法。结果表明,与裸玻碳电极相比,多壁碳纳米管修饰电极能显著提高阿奇霉素的氧化峰电流,阿奇霉素的电极过程完全不可逆,存在典型的吸附特性。在优化的实验条件下,氧化峰电流与阿奇霉素浓度在3.0×10-7～2.5×10-5 mol/L和2.5×10-5～5.0×10-4 mol/L范围内呈现良好的线性关系,检出限为1.0×10-7 mol/L。
Cyclic voltammetry and linear sweep voltammetry were used to study the electrochemical behavior of azithromycin at a multi-walled carbon nanotube modified glassy carbon electrode. An electrochemical method for the direct determination of azithromycin was established. The results show that, compared with the bare glassy carbon electrode, multi-walled carbon nanotubes modified electrode can significantly increase the azithromycin oxidation peak current, azithromycin electrode process is completely irreversible, there are typical adsorption characteristics. Under the optimized experimental conditions, the oxidation peak current showed a good linear relationship with the concentration of azithromycin in the range of 3.0 × 10-7 ~ 2.5 × 10-5 mol / L and 2.5 × 10-5 ~ 5.0 × 10-4 mol / L , The detection limit was 1.0 × 10-7 mol / L.