| 四氰基醌二甲烷修饰碳糊电极电催化氧化测定抗坏血酸 |
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| 引用本文： | 刘宝红 陈蕾. 四氰基醌二甲烷修饰碳糊电极电催化氧化测定抗坏血酸[J]. 分析化学, 1995, 23(2): 206-210 |
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| 作者姓名： | 刘宝红 陈蕾 |
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| 作者单位： | 复旦大学化学系 上海200433 |
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| 基金项目： | 国家自然科学基金，长春应用化学研究所电分析开放实验室资助课题 |
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| 摘 要： | 本用四氰基醌二甲烷作价体，制成ＴＣＮＱ－碳糊电极，研究了该电极的性能。电极对水溶液中的抗坏血酸在较宽的ｐＨ和浓度范围内均有良好的电催化氧化作用，电极的稳定性良好，在ＡＨ２浓度５．０×１０＾－５－５．０×１０－２ｍｏｌ／Ｌ范围内，催化峰电流与ＡＨ２浓度呈线性关系，响应时间小于３０ｓ．
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| 关 键 词： | 碳糊电极 TCNQ 催化 氧化 维生素C |
Tetracyanoquinodimethane Modified Carbon Paste Electrodes for Oxidation of Ascorbic Acid |
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| Liu Baohong,Chen Lei,Liu Haiying,Deng Jiaqi. Tetracyanoquinodimethane Modified Carbon Paste Electrodes for Oxidation of Ascorbic Acid[J]. Chinese Journal of Analytical Chemistry, 1995, 23(2): 206-210 |
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| Authors: | Liu Baohong Chen Lei Liu Haiying Deng Jiaqi |
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| Abstract: | A tetracyaroquinodimethane (TCNQ) modified carbon paste electrode for the specific determination of ascorbic acid(AH2) was described. Its electrocatalytic behaviour was investigated. The electrode has good electrooxidation of AH2 in a wide range of pH,and responded linearly to ascorbic acid of 5. 0 X 1(T5-5. 0 10-2mol/L, in less than 30 . The method is satisfactorily applied to the determination of AH2 in medicines. |
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| Keywords: | Tetracvanoquinodimethane carbon paste electrode ascorbic acid |
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