Khezeli Tahere, Daneshfar Ali
Department of Chemistry, Faculty of Science, Ilam University, Ilam 69315-516, Iran.
Department of Chemistry, Faculty of Science, Ilam University, Ilam 69315-516, Iran.
Ultrason Sonochem. 2017 Sep;38:590-597. doi: 10.1016/j.ultsonch.2016.08.023. Epub 2016 Aug 16.
Two novel magnetic deep eutectic solvents (MDESs), comprised of cheap and simple components named [choline chloride/phenol] [FeCl] and [choline chloride/ethylene glycol] [FeCl] were prepared and characterized by CHN elemental analysis, proton nuclear magnetic resonance (H NMR), vibrating sample magnetometery (VSM), Raman, Fourier transform-infrared (FT-IR) and UV-Vis spectrometery. The extraction efficiency of the prepared MDESs has been investigated in ultrasound assisted liquid-liquid microextraction based MDES (UALLME-MDES). Briefly, MDESs were added to n-heptan containing thiophene. Then, MDESs were dispersed in n-heptane by sonication. After that, microdroplets of MDESs were collected by a magnet and the remained concentration of thiophene in n-heptane phase was analyzed by GC-FID. The results indicated that [choline chloride/phenol] [FeCl] has higher extraction efficiency than [choline chloride/ethylene glycol] [FeCl]. This work opens a new way to the application of MDESs.
制备了两种新型磁性深共熔溶剂（MDESs），其由名为[氯化胆碱/苯酚][FeCl]和[氯化胆碱/乙二醇][FeCl]的廉价且简单的成分组成，并通过CHN元素分析、质子核磁共振（H NMR）、振动样品磁强计（VSM）、拉曼光谱、傅里叶变换红外光谱（FT-IR）和紫外可见光谱进行了表征。在基于MDES的超声辅助液液微萃取（UALLME-MDES）中研究了所制备的MDESs的萃取效率。简要地说，将MDESs添加到含有噻吩的正庚烷中。然后，通过超声处理将MDESs分散在正庚烷中。之后，用磁铁收集MDESs的微滴，并通过气相色谱-火焰离子化检测法（GC-FID）分析正庚烷相中剩余的噻吩浓度。结果表明，[氯化胆碱/苯酚][FeCl]比[氯化胆碱/乙二醇][FeCl]具有更高的萃取效率。这项工作为MDESs的应用开辟了一条新途径。
