方法对比
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| 伏安法× | 库仑分析法× | |
|---|---|---|
| 领域 | 分析化学 | 分析化学 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1922 | 1945 |
| 提出者≠ | Jaroslav Heyrovsky | James Lingane |
| 类型≠ | electrochemical separation and analysis | electrochemical titration |
| 开创性文献≠ | Nicholson, R. S., & Shain, I. (1965). Theory of stationary electrode polarography for a chemical reaction coupled to electron transfer. Analytical Chemistry, 36(4), 706–723. link ↗ | Lingane, J. J. (1974). Electroanalytical Chemistry (2nd ed.). Interscience Publishers. ISBN: 978-0486409023 |
| 别名≠ | electrochemical voltammetry, cyclic voltammetry, CV, differential pulse voltammetry | coulometric titration, electrochemical coulometry, amperes titration |
| 相关 | 5 | 5 |
| 摘要≠ | Voltammetry is an electrochemical analytical technique that studies chemical reactions and properties of substances by measuring the current response as the potential applied to an electrode is systematically varied. Developed by Jaroslav Heyrovsky in the 1920s (polarography), modern voltammetry has become essential for measuring redox potentials, detecting trace analytes, and investigating reaction mechanisms. Variants such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV) offer high sensitivity and selectivity for electrochemically active analytes. | Coulometry is an electrochemical analytical method that determines the concentration of an analyte by measuring the total electric charge (in coulombs) required to oxidize or reduce the analyte completely at an electrode. Developed by James J. Lingane in the 1940s, coulometry is highly accurate because it is based on fundamental constants (Faraday's law) and does not require external standards or calibration curves. This method is particularly valuable for trace analysis, water determination, and analysis of reactive species. |
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