| 石墨基体铁氰酸钴膜化学修饰电极的研制及应用研究 |
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| 引用本文： | 吴建人,王若平,孙玉堂,丁秀琴. 石墨基体铁氰酸钴膜化学修饰电极的研制及应用研究[J]. 济南大学学报(自然科学版), 1997, 0(1) |
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| 作者姓名： | 吴建人 王若平 孙玉堂 丁秀琴 |
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| 作者单位： | 山东建材学院应用化学系 |
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| 摘 要： | 研制了以石墨为基体的铁氰酸钴膜化学修饰电极。该电极在以ＮａＣｌ为支持电解质的溶液中，循环扫描时，显示出两对可逆氧化还原峰（分别位于０．４Ｖ及０．８Ｖ）。实验证明该电极能催化氧化Ｉ－。在还原支的０．４Ｖ处，还原电流对２～２００ｐｐｍＩ－有良好的线性响应；在氧化支的０．８Ｖ处，氧化电流则对０．５～２０ｐｐｍＩ－有良好的线性响应。检测下限为０．２ｐｐｍ。回收率为９６．１％～１０５％。应用该电极测定了海水及食盐中的Ｉ－含量，结果满意
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| 关 键 词： | 修饰电极；铁氰酸钴；碘的测定 |
PREPARE OF CHEMISTRY MODIFIED ELECTRODE WITHCOBALT HEXACYANOFERRATE AND ITS APPLICATIONS |
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| Wu Jianren Sun Yutang Wang Luoping Ding Xiuqin. PREPARE OF CHEMISTRY MODIFIED ELECTRODE WITHCOBALT HEXACYANOFERRATE AND ITS APPLICATIONS[J]. Journal of Jinan University(Science & Technology), 1997, 0(1) |
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| Authors: | Wu Jianren Sun Yutang Wang Luoping Ding Xiuqin |
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| Abstract: | A graphite electrode modified with cobalt hexacyanoferrate film was discussed in this paper.The electrode exhibited two excellent reversible redox peaks at 0 4V and 0 8V respectively when it was subjected to cyclic voltammetry in a supporting electrolyte of 1mol/L NaCl solution.It can be used for the catalytic oxidation and determination of I -.Not only the concentration of I - between 2ppm to 200ppm responded to the cathodic peak current ( i pc 1 )at 0 4V,but also the concentration of I - between 0 5ppm to 20ppm responded to the anodic peak current ( i pa 2 )at 0 8V with excellent liner relativity.The sensitivity is about 0 2ppm .The recovery of this method is within 96 1% to 105%.This method has been applied successfully to the analysis of I in ocean water and salt |
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| Keywords: | modified electrode cobalt hexacyanoferrate determination of I |
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