超临界CO_2络合萃取金属离子的研究与应用

Research and Application Progress of Supercritical CO_2 Extraction of Metal Ions

本文综述了国内外对超临界CO2络合萃取技术的研究与应用现状。总结并分析了超临界CO2流体萃取金属离子的原理、方法,动力学机理,络合剂和改性剂的选择,络合萃取过程的影响因素,并着重介绍了其在环境保护、核工业、冶金工业、化学分析、中药产业、保健品工业中的应用。最后指出了它目前存在的问题,并对未来研究方向进行了展望。

Research and application progress about chelating extraction of metal ions by supercritical CO2 fluid technology was reviewed. Principle, method and kinetics of supercritical chelating extraction, choice of chelating agents and modifiers, factors affecting the extraction, such as pressure, temperature, time and pH were discussed. The application of supercritical CO2 fluid technology on the environmental protection, nuclear industry, metal industry, chemical analysis, Chinese traditional medicine industry, health food industry were introduced. Finally, several problems about supercritical chelating extraction have been discussed and the future development directions have also been suggested.