Preparation of Amino-functionalized Guanidinium Ionic Liquid-Modified Magnetic Materials and Application in Solid-Phase Extraction of Pollutants in Water  

作　　者：Li-Zhen Qiao Chun-Mei Yu Rui-Ting Sun 

机构地区：[1]State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian,116023,China [2]School of Chemical Engineering,Dalian University of Technology,Panjin,124221,China

出　　处：《Journal of Analysis and Testing》2022年第4期401-410,共10页分析检测（英文）

基　　金：The work was financially supported by the Fundamental Research Funds for the Central Universities(DUT18RC(4)058).

摘　　要：In the present work,a novel amino-functionalized hexaalkylguanidinium chloride ionic liquid was prepared and grafted on the surface of magnetic materials through polyethyleneimine to enrich polycyclic aromatic hydrocarbons in water in combination with HPLC equipped with an ultraviolet detector.The effect of several parameters on the extraction efficiency was investigated,including the desorption solvent,the amounts of sorbents,the extraction time,the desorption time and the salt amount.Under the optimized conditions,the method validation exhibited good linearity with correlation coefficients above 0.994 in the range of 0.2-300 ng/mL and low limits of detection and quantification of 0.05 and 0.2 ng/mL,respectively.Besides,relative recoveries were in the range of 80-120%,and the intra-day and inter-day repeatability were good with the relative standard deviations of less than 20%.Finally,the guanidinium ionic liquid modified magnetic materials were applied for the extraction of polycyclic aromatic hydrocarbons from real water samples to demonstrate the utility,and the results show that the proposed method has good prospect for effective enrichment and determination of pollutants in water.

关 键 词：Guanidinium ionic liquid Magnetic solid-phase extraction Amino-functionalized Polycyclic aromatic hydrocarbons 

分 类 号：X832[环境科学与工程—环境工程] O658.2[理学—分析化学] TB34[理学—化学]