| 阿奇霉素在多壁碳纳米管修饰电极上的电化学行为及其测定 |
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| 引用本文： | 习霞,明亮.阿奇霉素在多壁碳纳米管修饰电极上的电化学行为及其测定[J].分析试验室,2012(9):89-92. |
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| 作者姓名： | 习霞 明亮 |
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| 作者单位： | 南通大学化学化工学院 |
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| 基金项目： | 南通大学自然科学项目(10Z015);南通市应用研究科技计划项目(K2006018)资助 |
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| 摘 要： | 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。
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| 关 键 词： | 阿奇霉素 伏安测定 碳纳米管 化学修饰电极 |
Electrochemical behavior and determination of azithromycin at a multi-wall carbon nanotube modified electrode |
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| XI Xia and MING Liang.Electrochemical behavior and determination of azithromycin at a multi-wall carbon nanotube modified electrode[J].Chinese Journal of Analysis Laboratory,2012(9):89-92. |
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| Authors: | XI Xia and MING Liang |
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| Institution: | XI Xia and MING Liang(School of Chemistry and Chemical Engineering,Nantong University,Nantong 226007) |
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| Abstract: | The electrochemical behavior of azithromycin at the multi-wall carbon nanotube(MWCNT) modified glassy carbon electrode(GCE) was investigated by cyclic voltammetry(CV) and linear sweep voltammetry(LSV).The experimental parameters were optimized,and a direct electroanalytical method for the determination of azithromycin was developed.The oxidation peak current of azithromycin was enhanced significantly at the MWCNT modified GCE,in contrast to that at the bare GCE.The electrode process of azithromycin was totally irreversible and adsorption-controlled.Under the optimized experimental conditions,the oxidation peak current was proportional to the concentration of azithromycin in the ranges of 3.0×10-7～2.5×10-5 mol/L and 2.5×10-5～5.0×10-4 mol/L with a detection limit of 1.0×10-7 mol/L. |
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| Keywords: | Azithromycin Voltammetry Carbon nanotube Chemically modified electrode |
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