| 离子液体/半胱氨酸修饰电极测定抗坏血酸 |
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| 引用本文： | 卫茂超,徐帅,段烁,徐晓萌,周长利. 离子液体/半胱氨酸修饰电极测定抗坏血酸[J]. 济南大学学报(自然科学版), 2012, 0(4): 358-360 |
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| 作者姓名： | 卫茂超 徐帅 段烁 徐晓萌 周长利 |
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| 作者单位： | 济南大学化学化工学院 |
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| 基金项目： | 山东省自然科学基金(ZR2009BM034) |
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| 摘 要： | 利用自组装膜技术,将离子液体和半胱氨酸修饰到金电极上,制备离子液体/半胱氨酸自组装膜修饰电极,以循环伏安法和交流阻抗法研究其电化学性质,并用于抗坏血酸(AA)的电催化氧化。结果显示:当AA的浓度在1×10-6～8×10-4mol/L范围内时,与所测得的氧化峰电流呈良好的线性关系,检出限为8.6×10-7mol/L。催化效果明显,可实现对AA的电化学检测。
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| 关 键 词： | 离子液体 双层自组装膜 循环伏安法 抗坏血酸 |
Determination of Ascorbic Acid at [CDIL]/L-cys/Au Self-Assembled Modified Electrode |
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| WEI Mao-chao,XU Shuai,DUAN Shuo,XU Xiao-meng,ZHOU Chang-li. Determination of Ascorbic Acid at [CDIL]/L-cys/Au Self-Assembled Modified Electrode[J]. Journal of Jinan University(Science & Technology), 2012, 0(4): 358-360 |
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| Authors: | WEI Mao-chao XU Shuai DUAN Shuo XU Xiao-meng ZHOU Chang-li |
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| Affiliation: | (School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China) |
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| Abstract: | Ionic liquid/L-cysteine self-assembled modified gold electrode was prepared,and its electrochemical behavior was investigated by cyclic voltammetry and electrochemical impedance.The electro-oxidation of ascorbic acid(AA) was studied at the modified electrode.The obtained results show that a good linear relationship between the peak current of AA and its concentration is from 1 × 10-6 mol/ L to 8 × 10-4 mol/ L,and the detect limit is 8.6 × 10-7 mol/ L.The significant electrocatalysis of ascorbic acid means the modified electrode could be well applied in electrochemical determination. |
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| Keywords: | ionic liquid self-assembled monolayer voltammetry ascorbic acid |
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