| 用修饰电极导数伏安法同时测定多巴胺和肾上腺素 |
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| 引用本文： | 何星存,李平,莫金垣. 用修饰电极导数伏安法同时测定多巴胺和肾上腺素[J]. 分析测试学报, 2000, 19(1): 19-21,22 |
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| 作者姓名： | 何星存 李平 莫金垣 |
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| 作者单位： | 中山大学,化学系,广东,广州510275 |
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| 基金项目： | 广东省博士启动基金，960006， |
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| 摘 要： | 研究了２，６－吡啶二甲酸在玻碳电极上电化学聚合的实验条件及修饰电极的电化学特性，发现该聚合物膜修饰电极对多巴胺和肾上腺素的电化学氧化有显著的催化作用，而对抗坏血酸等阴离子没有响应。利用在修饰电极上循环伏安阴极过程多巴胺和肾上腺素的峰电位不同，采用阴极化导数伏安法可同时测定多巴胺和肾上腺素。
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| 关 键 词： | 修饰电极 多巴胺 肾上腺素 导数伏安法 神经递质 |
Simultaneous Determination of Dopamine and Epinephrine at Modified Electrode by Derivative Voltammetry |
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| HE Xing-cun,LI Ping,MO Jin-yuan. Simultaneous Determination of Dopamine and Epinephrine at Modified Electrode by Derivative Voltammetry[J]. Journal of Instrumental Analysis, 2000, 19(1): 19-21,22 |
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| Authors: | HE Xing-cun LI Ping MO Jin-yuan |
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| Abstract: | The polymerizationconditions of 2,6-pyridine dicarboxylic acid at glassy carbon electrode and theelectrochemical characteristics of the modified electrode have been investigated. It isfound that the polymer shows strong catalytic effects on the electrooxidation of dopamine(DA) and epinephrine (EP), but shows no electrochemical response to anions such asascorbic acid and nitrite. According to the difference of the reduction potentials of DAand EP, DA and EP in mixture can be determined simultaneously by cathodic derivativevoltammetry with elimination of the interference from ascorbic acid. |
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| Keywords: | Poly(2 6 _ pyridine dicarboxylic acid) Modified electrode Dopamine Epinephrine Deri_vative voltammetry |
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