| 铁氰化镨修饰的电化学传感器的研制及其对半胱氨酸的测定 |
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| 引用本文： | 钟苑雯,林谋宏,周洁丹,刘英菊.铁氰化镨修饰的电化学传感器的研制及其对半胱氨酸的测定[J].分析化学,2010,38(2). |
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| 作者姓名： | 钟苑雯 林谋宏 周洁丹 刘英菊 |
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| 作者单位： | 1. 华南农业大学理学院应用化学系,广州,510642
2. 华南农业大学理学院应用化学系,广州,510642;湖南大学化学生物传感与化学计量学国家重点实验室,长沙,410082 |
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| 基金项目： | 湖南大学化学生物传感与化学计量学国家重点实验室开放基金(No.2007011);;广东省教育厅高校优秀青年创新人才培育项目资助 |
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| 摘 要： | 采用循环伏安法在PrCl3+K3Fe(CN)6溶液中于石墨电极表面电沉积铁氰化镨(PrHCF)薄膜,制备PrHCF修饰电极。对该修饰电极电化学的行为进行分析,包括扫描速度、K+浓度以及阴、阳离子对膜电极的影响。同时,以红外和XPS对膜进行了表征,IR谱图中氰基的伸缩振动峰证明了膜的存在;而XPS谱图中Fe2p1/2和Fe2p3/2能级的分裂说明了在成膜过程中Fe的价态发生变化,据此提出了可能的电聚合机理。同时,此修饰电极对半胱氨酸具有电催化氧化活性,并对其响应进行了研究。
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| 关 键 词： | 半胱氨酸 铁氰化镨 电催化 化学修饰电极 |
Construction of Electrochemical Sensor Based on Praseodymium Hexacyanoferrate Modified Graphite Electrode and Its Application for Cysteine Determination |
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| ZHONG Yuan-Wen,LIN Mou-Hong,ZHOU Jie-Dan,LIU Ying-Ju.Construction of Electrochemical Sensor Based on Praseodymium Hexacyanoferrate Modified Graphite Electrode and Its Application for Cysteine Determination[J].Chinese Journal of Analytical Chemistry,2010,38(2). |
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| Authors: | ZHONG Yuan-Wen LIN Mou-Hong ZHOU Jie-Dan LIU Ying-Ju |
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| Institution: | Department of Applied Chemistry;College of Sciences;Guangzhou 510642;State Key Laboratory of Chemo/Biosensing and Chemometrics;Changsha 410082 |
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| Abstract: | Praseodymium hexacyanoferrate film was modified on the graphite electrode by cyclic voltammetry in the solution of PrCl_3 and K_3Fe(CN)_6.Its electrochemical properties,including the influence of different scan rates,ions,and K+ concentrations on the film,were studied.The membrane was characterized by IR and XPS.In IR spectrum,the vibration of cyano group verified from the formation of the film on the electrode.In XPS spectrum,the splitting of Fe2p_1/2 and Fe2p_3/2 showed that the valence of iron has been c... |
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| Keywords: | Cysteine Praseodymium hexacyanoferrate Electrocatalysis Chemically modified electrode |
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