| 核固红及稀土核固红极谱行为的研究 |
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| 引用本文： | 闵静,李南强.核固红及稀土核固红极谱行为的研究[J].物理化学学报,1990,6(3):341-346. |
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| 作者姓名： | 闵静 李南强 |
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| 作者单位： | Department of Chemistry, Peking University, Beijing |
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| 摘 要： | 在由酸性至碱性的水溶液中均获得了核固红的极谱吸附波, 证实在酸性底液中核固红在汞电极上的吸附符合Frumkin等温式. 对pH由7至11的碱性底液中核固红电还原的ECE机制作了研究, 还获得并研究了在pH11附近, 乙二胺-氯化钾底液中的稀土-核固红体系的极谱络合吸附波。
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| 关 键 词： | 核固红 稀土核固红 极谱行为 |
| 收稿时间： | 1988-09-29 |
| 修稿时间： | 1989-11-23 |
Studies on the Polarographic Behaviors of Nuclear Fast Red and the Rare Earth(III)-Nuclear Fast Red System |
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| Min Jing,Li Nan-Qiang.Studies on the Polarographic Behaviors of Nuclear Fast Red and the Rare Earth(III)-Nuclear Fast Red System[J].Acta Physico-Chimica Sinica,1990,6(3):341-346. |
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| Authors: | Min Jing Li Nan-Qiang |
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| Institution: | Department of Chemistry, Peking University, Beijing |
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| Abstract: | In acidic or basic buffer solution, nuclear fast red (NFR) exhibits an adsorptive wave. The electrode processes have been verified as an ECE mechanism. The rate constant of the first order chemical reaction following electrochemical reaction has been measured by means of cyclic voltammetry. At pH 4.75, on the surface of mercury electrode, the adsorption of NFR obeys Frumkin isotherm. The adsorption coefficient β= 7.2×10~6 and the interaction factor υ=0.39 have been determined. In the supporting electrolyte containing 0.1 mol·L~(-1) ethylene diamine and 0.3 mol·L~(-1) KCl, at pH 11, the polarographic adsorptive complex wave of RE(III)-NFR has been obtained by using single-sweep polarograph. The electrode processes has been studied. |
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