| Trace Determination of Scandium Using Adsorption Voltammetry of Mix-Polynuclear Complex of Scandium-Calcium-Alizarin Red S at Carbon Paste Electrode |
| |
| 引用本文： | 黎拒难,张军,邓培红,费俊杰. Trace Determination of Scandium Using Adsorption Voltammetry of Mix-Polynuclear Complex of Scandium-Calcium-Alizarin Red S at Carbon Paste Electrode[J]. 中国稀土学报(英文版), 2004, 22(5): 618-622 |
| |
| 作者姓名： | 黎拒难 张军 邓培红 费俊杰 |
| |
| 作者单位： | College of Chemistry，Xiangtan University，Xiangtan 411105，China，Department of Chemistry，Hengyang Normal College，Hengyang 421008，China，Department of Chemistry，Hengyang Normal College，Hengyang 421008，China，College of Chemistry，Xiangtan University，Xiangtan 411105，China |
| |
| 基金项目： | 湖南省教委自然科学基金，国家重点实验室基金 |
| |
| 摘 要： | Scandiumisatypicaldispersalelement,whichiswidelydispersedinnature .Ithasbeenwidelyusedinthefieldsofmetallurgicalindustry ,chemicalindustry ,electronicsandelectrotechnics ,energysources ,radia tionchemistry ,etc .Scandium ,likeyttriumandmanyotherrareearthelements ,cannotbeeasilydeterminedbyconventionalvoltammetry ,evenifatamercuryelectrodewithhighhydrogenoverpotentialandinalka linesolution ,becauseitsreductionpotentialisclosetothereductionpotentialofhydrogen[1] .Advancingofthepolarographiccompl…
|
| 关 键 词： | 分析化学 伏安法 表面吸附 碳糊剂 钪电极 混合多原子络合物 稀土元素 |
Trace Determination of Scandium Using Adsorption Voltammetry of Mix-Polynuclear Complex of Scandium-Calcium-Alizarin Red S at Carbon Paste Electrode |
| |
| Li Junan. Trace Determination of Scandium Using Adsorption Voltammetry of Mix-Polynuclear Complex of Scandium-Calcium-Alizarin Red S at Carbon Paste Electrode[J]. Journal of Rare Earths, 2004, 22(5): 618-622 |
| |
| Authors: | Li Junan |
| |
| Abstract: | A novel method was described for the determination of ultra trace amount of scandium based on the cathodic adsorptive voltammetry of the mix-polynuclear complex of scandium-calcium-alizarin red S at a carbon paste electrode (CPE).The 2nd-order derivative linear scan voltammograms of the adsorbed complex were recorded by model JP-303 polarographic analyzer from 0.0 to -1.0 V (vs.SCE).The experimental conditions of the working procedure were optimized.The results show that the complex can be adsorbed on the surface of the CPE,yielding one peak at -0.61 V,corresponding to the reduction of the alizarin red S in the mix-polynuclear complex at the electrode.The detection limit of Sc3 is 1.0×10-10 mol·L-1 for 3 min of accumulation time.The procedure was successfully applied to the determination of trace amount of scandium in the sample ores. |
| |
| Keywords: | analytic chemistry adsorption voltammetry carbon paste electrode scandium mix-polynuclear complex rare earths |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
