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Citation: DENG Fan-Zheng, GUO Dong-Fang. Partition of Rutin in Ionic Liquid Aqueous Two-phase System[J]. Chinese Journal of Applied Chemistry, ;2007, 24(7): 838-840. shu

Partition of Rutin in Ionic Liquid Aqueous Two-phase System

DENG Fan-Zheng ^, ,
GUO Dong-Fang

1.
Department of Chemistry, HuaiBei Coal Industry Teacher's College, Huaibei 235000

Corresponding author: DENG Fan-Zheng,
Received Date: 10 July 2006
Available Online: 4 October 2006
Fund Project: 安徽省教育厅自然科学研究项目(2004kj319) (2004kj319)

A new method of extracting and separating rutin in an aqueous two-phase system (ATPS) formed from water-soluble ionic liquid [Bmim] BF₄ (1-butyl-3-methylimidazolium tetrafluoroborate) and phase-forming salt NaH₂PO₄ at room temperature was studied.The effect of concentrations of ionic liquid,salt added,rutin and solution acitity on the partition of rutin were investigated systematically.In a pH 2~7 ionic liquid-ATPS system of a total volume of 5 mL formed from 0.5~2.5 mL of 80% alcohol solution of rutin,1.0~2.5 mL [Bmim] BF₄ and 1.0~2.0 g of NaH₂PO₄,the ionic liquid phase had the highest extraction efficiency of 90%.Moreover,a lot of foreign substances did not interfere with the phase ratio and the determination of rutin except for cationic surfactants.Compared to that for a ethanol-water solution,the maximum absorption wavelength of the rutin in ionic liquid shifts to lower wavelength,indicating the interaction of rutin and ionic liquid.This method can be applied to the determination of rutin in ginkgo leaves.
- ionic liquid,
- aqueous two-phase,
- rutin,
- partition,
- character
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