疏水性离子液体反胶束电膜技术提取环境水中的四环素  

Electromembrane Extraction of Tetracycline in Environmental Water Using Hydrophobic Ionic Liquid Reverse Micelle

作　　者：费家裕 陈小锋[1] 王孟歌 李明[1] FEI Jia-Yu;CHEN Xiao-Feng;WANG Meng-Ge;LI Ming(College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学环境科学与工程学院,扬州225127

出　　处：《分析化学》2024年第11期1745-1754,共10页Chinese Journal of Analytical Chemistry

基　　金：浙江省海产品健康危害因素关键技术研究重点实验室(舟山市疾病预防控制中心)开放课题项目(No.202304)资助。

摘　　要：建立了一种基于1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐([Bmim][NTf_(2)])和1-癸基-3-甲基咪唑双三氟甲磺酰亚胺盐([C_(10)mim][NTf_(2)])的疏水离子液体反胶束电膜提取(IL-RM-EME)样品前处理方法,用于环境水样中四环素(TC)的检测。支撑液膜(SLM)种类、膜孔径、电压、供相和受相溶液pH值和含盐量等对四环素的提取效率均有较大的影响,单因素条件优化结果显示,在不添加盐条件下,使用[Bmim][NTf_(2)]离子液体SLM、PC膜孔径为5μm、电压为30 V、供相pH=2.5以及受相pH=7.5时,IL-RM-EME对TC的提取率最高,达到77.8%,远高于中性(吐温85-异丙醇-正己烷)反胶束电膜体系(41.4%)。与传统的样品前处理方法相比,本方法具有操作简单、环境污染小、试剂消耗少和费用低等优势,在环境有机污染物检测中具有良好的应用前景。A hydrophobic ionic liquid reverse micelle electromembrane extraction(IL-RM-EME)method based on 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide([Bmim][NTf_(2)])and 1-decyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide([C_(10)mim][NTf_(2)])was developed for pretreatment of tetracycline(TC)in environmental water samples in this work.The experimental results indicated that the type of supported liquid membrane(SLM),membrane pore size,voltage,pH of donor/acceptor phase solution and salt content had great influences on the extraction efficiency of tetracycline.Under the optimal conditions of single factors,including using([Bmim][NTf_(2)])ionic liquid SLM components,PC membrane with pore size of 5μm,30 V of voltage,donor phase at pH 2.5,acceptor phase at pH 7.5,and none salt added,the best extraction efficiency of IL-RM-EME to TC of 77.8%was obtained.This extraction efficiency was much higher than that of neutral(Tween 85-isopropyl alcohol-n-hexane)reverse micelle membrane system(41.4%).Compared with traditional sample pretreatment method,the proposed method had many advantages such as simple operation,less environmental pollution,less reagent consumption and low cost.Moreover,the proposed method showed a good application prospect in detection of environmental organic pollutants.

关 键 词：离子液体 反胶束 电膜提取 四环素 

分 类 号：X832[环境科学与工程—环境工程]