期刊
ANALYTICAL METHODS
卷 10, 期 25, 页码 3032-3038出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ay00800k
关键词
-
资金
- Science and Technology Key Project of Sichuan Tobacco Company [201302002]
- China Agriculture Research System [CARS-18]
- Funding of Outstanding Papers Promotion Project for Financial Innovation in Sichuan province [2018LWJJ-015]
Ionic liquid-based air-assisted liquid-liquid microextraction (IL-AALLME) combined with dispersive micro-solid phase extraction (D--SPE) was applied for the extraction and preconcentration of Cu prior to analysis by graphite furnace atomic absorption spectrometry. IL [Hmim][PF6] was used as the extractant, non-ionic surfactant Triton X-100 as the emulsifier and Fe3O4 nanoparticles as the sorbent. The emulsion was rapidly formed by pulling in and pushing out the mixture of aqueous sample solution and extraction solvent repeatedly using a 10 mL glass syringe. Then, the extractant phase was mixed with Fe3O4 magnetic nanoparticles and separated using a magnet. As a result, the conventional tedious procedure associated with AALLME such as centrifugation was eliminated and the analytical process was accelerated. The experimental parameters affecting the extraction efficiency of Cu such as pH, IL volume, Triton X-100 concentration, Fe3O4 amount, number of extraction times and ultrasound time were investigated and optimized. Under the optimal conditions, the calibration curve was linear in the range of 1.5-120 ng mL(-1) for Cu with a correlation coefficient (R) of 0.9992. The limit of detection was 0.5 ng mL(-1). Finally, the applicability of this newly developed method was investigated for the analysis of Cu in real 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