| 对氯苯酚在酪氨酸酶-碳纳米管修饰电极上的电化学行为 |
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| 引用本文： | 刘华俊,陈敏,刘慧宏.对氯苯酚在酪氨酸酶-碳纳米管修饰电极上的电化学行为[J].武汉大学学报(理学版),2011,57(4):289-292. |
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| 作者姓名： | 刘华俊 陈敏 刘慧宏 |
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| 作者单位： | 1. 襄樊学院化学工程与食品科学学院,湖北襄樊,441053
2. 武汉纺织大学化学与化工学院,湖北武汉,430073 |
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| 基金项目： | 湖北省自然科学基金资助项目(2008CDB014); 湖北省教育厅重大项目(Z20092501) |
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| 摘 要： | 研究了对氯苯酚在酪氨酸酶-碳纳米管修饰电极上的酶催化氧化和电化学还原过程.实验表明,酶催化反应和电化学反应均受溶液pH值的影响,酶催化反应为控制步骤.对氯苯酚的浓度在0.12~1.11 mmol.L-1范围内,与电流呈线性关系,检出限为14μmol.L-1.酶催化反应的表观米氏常数Km=163μmol.L-1.
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| 关 键 词： | 对氯苯酚 酪氨酸酶 碳纳米管 电化学 |
Electrochemistry of p-Chlorophenol on a Tyrosinase-Carbon Nanotube Modified Electrode |
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| LIU Huajun,CHEN Min,LIU Huihong.Electrochemistry of p-Chlorophenol on a Tyrosinase-Carbon Nanotube Modified Electrode[J].JOurnal of Wuhan University:Natural Science Edition,2011,57(4):289-292. |
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| Authors: | LIU Huajun CHEN Min LIU Huihong |
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| Institution: | LIU Huajun1,CHEN Min1,LIU Huihong2(1.School of Chemical Engineering and Food Science,Xiangfan University,Xiangfan 441053,Hubei,China,2.College of Chemistry and Chemical Engineering,Wuhan Textile University,Wuhan 430073,China) |
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| Abstract: | The use of electrochemical biosensors has been shown to be a suitable alternative with respect to the conventional well-established analytical techniques for the monitoring of p-chlorophenol.The reactions of p-chlorophenol on a tyrosinase-carbon nanotube modified electrode were explored.The processes contain the oxidation of p-chlorophenol by enzyme catalysis and the electrochemical reduction of the product.The solution pH effects the reactions.The results reveal that the reaction of enzyme catalysis is the... |
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| Keywords: | p-chlorophenol tyrosinase carbon nanotube electrochemistry |
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