| 碱性鲁米诺体系在玻碳和铂电极上的电位分辨电致化学发光研究 |
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| 引用本文： | 林祥钦,孙玉刚,崔华.碱性鲁米诺体系在玻碳和铂电极上的电位分辨电致化学发光研究[J].分析化学,1999,27(5):497-503. |
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| 作者姓名： | 林祥钦 孙玉刚 崔华 |
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| 作者单位： | 中国科学技术大学化学系,合肥,230026 |
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| 基金项目： | 中国科学技术大学基地建设择优支持费，中国科学院重大项目基金的资助课题 |
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| 摘 要： | 提出一种使用循环伏安（ＣＶ）扫描电位下的电致化学发光（ＥＣＬ）研究方法，在自制的仪器系统中同时进行ｉ－Ｅ和Ｉ－Ｅ测量，获得对应的ＣＶ和电位分辨的电致化学发光（ＰＲＥＣＬ）曲线。首先发现碱性鲁米诺体系在玻碳电极（ＧＣＥ）上呈现２个阳极发光峰（在０．３２Ｖ、０．３９Ｖｖｓ．Ａｇ）和１个阴极发光峰（在－０．６２Ｖ），在Ｐｔ电极上呈现２个阳极发光峰（在０．４９Ｖ、０．７５Ｖ）。结合ＣＶ、一阶微分伏安、Ｃｌ
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| 关 键 词： | 电位分辨 电致化学发光 循环伏安 鲁米诺 |
Potential-resolved Electrochemiluminescence of Luminol in Alkaline Solutions at Glassy Carbon and Platinum Electrodes |
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| Lin Xiangqin,Sun Yugang,CUI Hua.Potential-resolved Electrochemiluminescence of Luminol in Alkaline Solutions at Glassy Carbon and Platinum Electrodes[J].Chinese Journal of Analytical Chemistry,1999,27(5):497-503. |
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| Authors: | Lin Xiangqin Sun Yugang CUI Hua |
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| Abstract: | Potential-resolved electrochemiluminescence( PRECL) of luminol is observed at glassy carbon (GC) and platinum electrode under conventional cyclic voltammetric (CV) conditions. At a home-builit instrument CV i-E and PRECL I-E curves were recorded simultaneously. Two anodic PRECL peaks at 0.32 and 0.39 V (vs. Ag) and one cathodic PRECL peak at -0.62 V were observed at GCE. Two anodic PRECL peaks at 0.47 and 0.67 V were observed at Pt electrode. In comparison with the CVs and differential voltammograms of the system, a five-channel PRECL mechanism is proposed: (1) direct electrode oxidation of luminol at (GCE), (2) H2O2 assisted luminol oxidation at GCE, (3) luminol is oxidized by H2O2 cathodically generated from O2 at GCE, (4) luminol is oxidized by electrogenerated PtO at Pt electrode, (5) luminol is oxidized by electrogenerated O] at Pt electrode. |
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| Keywords: | Potential-resolved electrmchemiluminescene cyclic voltammetry luminol |
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