| 吲哚美辛在单壁碳纳米管修饰电极上的电化学行为 |
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| 引用本文： | 孔粉英,曾冬铭,徐茂田.吲哚美辛在单壁碳纳米管修饰电极上的电化学行为[J].分析试验室,2009,28(2). |
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| 作者姓名： | 孔粉英 曾冬铭 徐茂田 |
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| 作者单位： | 1. 中南大学化学化工学院生物传感所,长沙,410083
2. 中南大学化学化工学院生物传感所,长沙,410083;商丘师范学院化学系,商丘,476000 |
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| 摘 要： | 运用伏安法研究了吲哚美辛在单壁碳纳米管修饰电极上的电化学行为.在0.1 mol/L HAc-NaAc缓冲溶液(pH 4.5)中,吲哚美辛于0.91 V (vs.SCE)电位处有一个峰形很好的氧化峰.与裸玻碳电极相比,吲哚美辛在修饰电极上的电位正移了约30 mV,峰电流增加了近10倍,表明该修饰电极对吲哚美辛有较强的电催化作用.搅拌条件下开路富集2 min,氧化峰电流与吲哚美辛在5.5×10-7～1.1×10-5 mol/L浓度范围内呈良好的线性关系,检出限为1.1×10-7 mol/L.该方法可用于药剂中吲哚美辛的分析.
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| 关 键 词： | 单壁碳纳米管 吲哚美辛 修饰电极 伏安测定 |
Electrochemical behavior of indomethacin at a single-wall carbon nanotube-modified electrode |
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| KONG Fen-ying,ZENG Dong-ming,XU Mao-tian.Electrochemical behavior of indomethacin at a single-wall carbon nanotube-modified electrode[J].Chinese Journal of Analysis Laboratory,2009,28(2). |
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| Authors: | KONG Fen-ying ZENG Dong-ming XU Mao-tian |
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| Institution: | 1. School of Chemistry and Chemical Engineering;Central South University;Changsha 410083;2. Department of Chemistry;Shangqiu Normal College;Shangqiu 476000 |
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| Abstract: | In this paper, the electrochemical behavior of indomethacin at a single-wall carbon nanotube (SWNT)-modified glassy carbon electrode is investigated by voltammetry. In a 0.1 mol/L HAc-NaAc buffer (pH 4.5), indomethacin exhibits a sensitive oxidation peak at ca. 0.91 V (vs. SCE). Compared with the bare glassy carbon electrode, the potential shifts positively ca. 30 mV, and the current increases nearly 10 times. The results show that the modified electrode has a high electrocatalytic activity toward indometha... |
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| Keywords: | Single-wall carbon nanotube Indomethacin Modified electrode Voltammetric determination |
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