摘要
相图是研究双水相萃取分离过程的重要前提步骤,提出了清-浊点辅助相图制作方法,采用移液器微量滴定的方法绘制了PEGs/(NH_4)_2SO_4的双水相相图,经准确度验证,此方法准确可靠。清-浊点辅助相图制作法具有操作简便、快速、准确和适用范围广等特点,为双水相系统相图制作提供了新的方法,可以用于双水相萃取的实验教学、科研及生产等领域。
Phase diagrams are essential and important in the application of aqueous two-phase extraction technology.Conventional methods in the determination of phase boundaries are inaccurate,complicated and time consuming. In this paper,we proposed a novel method to overcome these imperfections. Using adjustable-volume pipettes and pipette calibration method,the method proposed could steadily provide accurate phase diagrams in a short time. It was tested in the phase diagram of PEG/（ NH_4）_2SO_4,and the result showed extensive reliability. This method can be used in area of experiment teaching,scientific research,and industrial manufacture which related to aqueous two-phase extraction technology.
出处
《实验室研究与探索》
CAS
北大核心
2017年第3期16-19,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(6130425)
华南农业大学校级教学改革项目(JG14110)
