离子液体悬浮固化液相微萃取技术在环境水样有机污染物分析中的应用研究

Solidified floating organic-drop liquid-phase microextraction（SFO-LPME） is a simple, rapid and efficient sample pretreatment method for the analysis of trace pollutants in environmental samples. However, the solvents used in SFO-LPME methods has some shortages such as high volatility, low polarity and limited number of organic solvents. In this project, a new technique, namely, ionic liquids(ILs) based SFO-LPME is proposed for the analysis of trace pollutants in environmental water samples. In which, the volatile organic solvents in traditional SFO-LPME technique will be replaced by ILs. With a variety of analytical instruments, the main factors which affect the efficiency of the extraction process are studied during the research process. In addition, the extraction conditions will be optimized to increase the extraction efficiency and reduce the time of extraction. Finally, the noval，fast, efficient and environmental benign ILs-SFO-LPME method will be established for analysis of the typical organic pollutants in real water samples. It is expected that the carrying out of this research will be helpful in reducing or eliminating the adverse effect on human health and environment caused by the loss of harmful volatile organic solvents in the process of analysis of organic pollutants in the water samples. This research has significant implications for expanding the application area of new and environmental friendly sample pretreatment technology in the field of environment science. This research has important implications for expanding the application area of ionic liquid in the field of environmental science research and promoting the cross integration of sub-disciplines of chemistry, such as green chemistry, environmental analysis and physical chemistry. Conducting the project has important academic and practical application value.

悬浮固化液相微萃取(SFO-LPME)技术是一种简便快速、环境友好的样品前处理技术，但该技术目前使用的萃取溶剂存在极性小、种类少、易挥发等不足之处,限制了其应用范围。本项目采用离子液体(ILs)替代目前SFO-LPME技术使用的挥发性有机溶剂（VOCs），通过考察ILs-SFO-LPME新技术中影响ILs对环境水样有机污染物萃取效率的主要因素，优化萃取条件，提高萃取效率，并将该技术与色谱分析手段相结合，为环境水样中有机污染物的检测提供简便、快速、高效且环境友好的新方法。本项目旨在填补ILs在SFO-LPME技术中应用的研究空白，拓展SFO-LPME技术中萃取溶剂的选择范围及该技术的应用领域，降低由于其使用VOCs对人类健康和环境的危害。开展本项目研究工作还将有助于拓展离子液体在环境科学领域的应用研究，促进环境分析、绿色化学和物理化学等化学分支学科的交叉融合，具有有重要的学术和应用价值。

悬浮固化液相微萃取(SFO-LPME)技术是一种环境友好、简便快速的样品前处理技术，但该技术目前使用的萃取溶剂存在极性小、种类少、易挥发等不足之处,限制了其应用范围。本项目根据离子液体的特点，利用其可设计性这一有利因素，采用具有特定熔点的离子液体(ILs)替代目前SFO-LPME技术使用的挥发性有机溶剂（VOCs），通过考察ILs-SFO-LPME新技术中影响ILs对环境水样有机污染物萃取效率的主要因素，优化萃取条件，提高萃取效率，并将该技术与色谱分析手段相结合用于环境水样中有机污染物的检测。研究结果显示该技术具有为环境水样中有机污染物的检测提供简便、快速、高效且环境友好的新方法。本项目的开发填补了ILs在SFO-LPME技术中应用的研究空白，拓展了SFO-LPME技术中萃取溶剂的选择范围及该技术的应用领域，降低了由于其使用VOCs对人类健康和环境的危害。本项目研究工作促进了离子液体在环境科学领域的应用研究，推进了环境分析、绿色化学和物理化学等化学分支学科的交叉融合，具有重要的学术和应用价值。