期刊
ANALYTICAL METHODS
卷 11, 期 46, 页码 5901-5909出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ay02244a
关键词
-
资金
- National Natural Science Foundation of China [21808173]
- Training Project of Innovation Team of Colleges and Universities in Tianjin [TD13-5020]
Seven hydrophilic and hydrophobic deep eutectic solvents (DESs) were prepared. The physical properties, water solubility, viscosity, density and freezing point of DESs were determined. The characterization of DESs was performed by Fourier transform infrared spectroscopy and H-1 nuclear magnetic resonance spectroscopy. The extraction efficiencies accomplished by two distinct approaches, namely, dispersive liquid-liquid microextraction (DLLM) with hydrophobic DESs and the aqueous two-phase system (ATPSs) with hydrophilic DESs were compared. ATPSs based on hydrophilic DES were used to extract sulfonamides, revealing good extraction efficiency. The optimum extraction conditions were the concentration of K2HPO4 being 0.2 g mL(-1) and the volume of DES being 200 mu L. Under these conditions, the satisfactory recoveries of the proposed method investigated ranged from 87.7 to 95.6% with the relative standard deviation (RSD) of 0.9-3.1% (n = 3). The linear range was 0.10-50.0 mu g mL(-1) for the four sulfonamides. The limits of detection were in the range from 0.003 to 0.006 mu g mL(-1) and the limits of quantification were in the range from 0.010 to 0.020 mu g mL(-1). The results indicated that the proposed method was successfully applied for monitoring sulfonamides in water samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据