doi:

DOI: 10.3724/SP.J.1123.2017.10003

Chinese Journal of Chromatography (色谱) 2018/36:1 PP.5-11

Preparation of monolithic fibers with deep eutectic solvent for solid phase microextraction of polycyclic aromatic hydrocarbons in lake water


Abstract:
A monolithic fiber of poly(butyl methacrylate-ethylene glycol dimethacrylate)[poly(BMA-EDMA)] was prepared using deep eutectic solvent (DES) of choline chloride-ethanediol as a porogen. The prepared fibers were applied to direct extraction of three polycyclic aromatic hydrocarbons (PAHs) in lake water samples by solid phase microextraction (SPME). The extracts were determined by ultra performance liquid chromatography (UPLC). The fiber without DES was prepared at the same time. Both fibers (with and without DES) were compared with a commercial polydimethylsiloxane (PDMS) fiber. The highest extraction efficiency was clearly obtained with poly(BMA-EDMA) fiber. The extraction time, extraction solvent, desorption time, desorption solvent, and ionic strength were optimized. Under the optimum conditions, the linear ranges for the three PAHs (naphthalene, biphenyl, and phenanthrene) were 0.1-6.0 mg/L (r ≥ 0.9903). The limits of detection (LODs) of the three PAHs were in the range of 2.1-4.9 μg/L. The recoveries of the three PAHs spiked in lake water samples were 86.4%-111.3% with relative standard deviations (RSDs, n=6) of 11.2%-15.1%. This method is simple, stable, and inexpensive, and can be used for the determination of the PAHs in lake water samples.

Key words:solid phase microextraction (SPME),ultra performance liquid chromatography (UPLC),deep eutectic solvent (DES),polycyclic aromatic hydrocarbons (PAHs),lake water

ReleaseDate:2018-01-24 14:42:44



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