离子液体[BPy]BF_4双水相萃取芦丁的研究  

Extraction and Separation of Rutin in Ionic Liquid Aqueous Two-phase System

作　　者：那吉[1] 杨青海[1] 董学畅[1] 赵石楠[1] 

机构地区：[1]云南民族大学化学与生物技术学院,云南昆明650031

出　　处：《云南化工》2008年第3期36-37,41,共3页Yunnan Chemical Technology

摘　　要：建立了由亲水性离子液体四氟硼酸N-丁基吡啶[BPy]BF4和（NH4）2SO7形成的双水相体系萃取分离芦丁的新方法。研究了（NH4）2SO4浓度、芦丁溶液浓度、离子液体用量和溶液酸度对双水相形成和萃取率的影响。结果表明，当双水相体系组成为：（NH4）2SO4 1．5g，2．0mL离子液体，1．0～1．2mL芦丁溶液，溶液酸度在pH4-6范围内，该离子液体双水相体系对芦丁有较高的萃取率（E％〉90）。A new method for the extraction and separation of rutin with aqueous two -phase system formed by a room temperature water - soluble ionic liquid [ BPy] BF4 （ nitrogen - butyl pyridine tetrafluoroborate ） and phase - forming salt （ NH4 ）2SO4 was studied, and effect of concentrations of ionic liquid, salt and rutin and pH value on extraction efficiency were investigated systematically. With the addition of 1.0 - 1.2 mL rutin, 2.0 mL[ BPy] BF4 , 1.5 g （ NH4 ）2 SO4 and pH 4 -6, ionic liquid aqueous two- phase system had the highest extraction efficiency （E% 〉 90）.

关 键 词：离子液体 双水相 芦丁 萃取分离 

分 类 号：O621.25[理学—有机化学] O645.1[理学—化学]