| 浅析如何在溶剂萃取机理研究中正确使用斜率法 |
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| 引用本文： | 高丹丹,李东东.浅析如何在溶剂萃取机理研究中正确使用斜率法[J].盐湖研究,2019,27(3):27-34. |
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| 作者姓名： | 高丹丹 李东东 |
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| 作者单位： | 中国科学院青海盐湖研究所中国科学院盐湖资源综合高效利用重点实验室;青海省盐湖资源综合利用工程技术中心;青海省盐湖资源化学重点实验室 |
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| 基金项目： | 国家自然科学基金项目(51404234)资助 |
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| 摘 要： | 斜率法是萃取机理研究最为常用的方法之一。尽管其理论基础和使用方法非常简单,但该方法却常常被误用,导致其非但不能有效的确定萃取机理,反而产生了误导性结论。本文以t-BAMBP萃取碱金属离子(K~+、Rb~+、Cs~+)体系为例讨论了常见的错误用法以及造成这类情况的根源问题,之后对其他萃取体系中类似错误用法进行了简要评述,表明斜率法的错误使用主要源于对萃取反应方程式的错误假定及对工作方程推导过程中引入的近似处理理解不当。最后总结了在萃取机理研究中正确使用斜率法的几点注意事项。
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| 关 键 词： | 萃取机理 斜率法 热力学理论 使用方法 |
| 收稿时间： | 2019/2/20 0:00:00 |
| 修稿时间： | 2019/3/15 0:00:00 |
Discussion on How to Correctly Use Slope Analysis Method for Liquid-Liquid Extraction Mechanism Study |
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| GAO Dan-dan and LI Dong-dong.Discussion on How to Correctly Use Slope Analysis Method for Liquid-Liquid Extraction Mechanism Study[J].Journal of Salt Lake Research,2019,27(3):27-34. |
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| Authors: | GAO Dan-dan and LI Dong-dong |
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| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining,810008,China and Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining,810008,China;Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining,810008,China |
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| Abstract: | Slope analysis method is a common used approach for the study of solvent extraction mechanism. Theory and use of the method is relatively simple, but extensive studies have made incorrect or improper usage, which results in the solvent extraction reactions were misunderstood and gave bad knowledge. In this article, common errors on the usage of slope analysis method were discussed using the solvent extraction system (t-BAMBP or s-BAMBP+M+(M=K,Rb,Cs)) as an example.Moreover, brief reviews on the usage of slope analysis method for some other solvent extraction system were also included. We conclude that the incorrect usage of slope analysis method mainly results from the error assumed extraction reaction and improper using of simple working equation ignoring the approximation in the derivation of the equation. Finally, some tips for the correctly use of slope analysis in solvent extraction mechanism were pointed out. |
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| Keywords: | Liquid-liquid extraction mechanism Slope analysis method Thermodynamic theory Using strategy |
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