| 熊果苷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： | 任健敏,黄彩霞,梁泳珊,曾百肇.熊果苷在多壁碳纳米管修饰电极上的电化学行为及其测定[J].韶关学院学报,2009,30(3):57-60. |
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| 作者姓名： | 任健敏 黄彩霞 梁泳珊 曾百肇 |
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| 作者单位： | 1. 韶关学院化学与环境工程学院,广东,韶关,512005
2. 武汉大学化学与分子科学学院,湖北,武汉,430072 |
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| 摘 要： | 研究了熊果苷在多壁碳纳米管修饰玻碳电极（MWCNT／GCE）上的电化学行为，在pH=1的KCl-HCl缓冲溶液中，熊果苷在该电极上有一较灵敏、稳定的氧化峰，电位为0.820V，多壁碳纳米管修饰电极能显著催化熊果苷的电化学反应．提出了一种灵敏、简便的检测熊果苷的电化学方法．在优化条件下熊果苷浓度在8.0×10^-6～9．52×10^-4mol／L范围内与峰电流呈线性相关，相关系数r=0.9985，检出限为6．0×10^-6mol／L．一些常见的共存物质对其测定无干扰，该方法稳定性和重现性好。
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| 关 键 词： | 多壁碳纳米管 伏安法 熊果苷 化学修饰电极 电化学行为 |
Electrochemical behavior and determination of Arbutin at multi-wall carbon nanotubes modified glassy carbon electrode |
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| REN Jian-min,HUANG Cai-xia,LIANG Yong-shan,ZENG Bai-zhao.Electrochemical behavior and determination of Arbutin at multi-wall carbon nanotubes modified glassy carbon electrode[J].Journal of Shaoguan University(Social Science Edition),2009,30(3):57-60. |
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| Authors: | REN Jian-min HUANG Cai-xia LIANG Yong-shan ZENG Bai-zhao |
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| Institution: | 1.School of Chemistry and Enviromental Engineering, Shaoguan University, Shaoguan 512005, Guangdong, China; 2.College of Chemistry and Molecular,Wuhan University,Wuhan 430072,Hubei,China) |
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| Abstract: | Electrochemical behavior of arbutin at the MWCNT modified GCE was investigated by cyclic voltammetry. A sensitive and steady peak of arbutin af about 0.820 V was obtained in the KCl-HCl （pH=1） buffer solution. Therefore a sensitive and simple electrochemical method was developed for determining arbutin. Under optimum conditions, the oxidation peak current is linearly with the concentration of arbutin over the range from 8.0×10^-6mol/L to 9.52×10^-4mol/L. The correlation coefficient is 0.998 5. The detection limit is as low as 6.0×10^-6mol/L. Major concomitant substances did not interfere with the detection of arbutin. |
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| Keywords: | multi-wall carbon nanotubes voltammetry behavior arbutin chemically modified electrode electrochemical |
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