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篇目详细内容 |
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【篇名】 |
Electrochemical behaviors of ofloxacin and its voltammetric determination at carbon nanotubes film modified electrode |
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【刊名】 |
Frontiers of Chemistry in China |
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【刊名缩写】 |
Front. Chem. China |
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【ISSN】 |
1673-3495 |
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【EISSN】 |
1673-3614 |
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【DOI】 |
10.1007/s11458-008-0055-7 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2008 |
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【卷期】 |
3
卷3期 |
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【页码】 |
353-358
页,共
6
页 |
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【作者】 |
YANG Chunhai;
ZHANG Shenghui;
LIU Yingxuan;
HUANG Wensheng;
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【关键词】 |
multi-wall carbon nanotubes (MWNTs)-Nafion film; ofloxacin; chemically modified electrodes (CMEs); Voltammetry |
【摘要】 |
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A multi-wall carbon nanotubes (MWNTs)-Nafion film-coated glassy carbon electrode (GCE) was fabricated and the electrochemical behavior of ofloxacin on the MWNTs-Nafion film-coated GCE were investigated by cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). The oxidation peak current of ofloxacin increased significantly on the MWNTs-Nafion film modified GCE compared with that using a bare GCE. This nano-structured film electrode exhibited excellent enhancement effects on the electrochemical oxidation of ofloxacin. A well-defined oxidation peak attributed to ofloxacin was observed at 0.97 V and was applied to the determination of ofloxacin. The oxidation peak current was proportional to ofloxacin concentration in the ranges 1.0 × 10-8 to 1.0 × 10-6 mol/L and 1.0 × 10-6 to 2.0 × 10-5 mol/L. A detection limit of 8.0 × 10-9 mol/L was obtained for 400 s accumulation at open circuit (S/N = 3). This method for the detection of ofloxacin in human urine was satisfactory. |
