Preparation of highly hydrophilic magnetic nanoparticles with anion‐exchange ability and their application for the extraction of non‐steroidal anti‐inflammatory drugs in environmental samples

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EarlyView Article

  • Published: Jan 2, 2018
  • Author: Li‐yun Ma, Qian Li, Jing Li, Li Xu
  • Journal: Journal of Separation Science


Diallyldimethylammonium chloride modified magnetic nanoparticles were synthesized by the “thiol‐ene” click chemistry reaction. Diallyldimethylammonium chloride rendered the material plenty of quaternary ammonium groups, and thus the excellent aqueous dispersibility and anion‐exchange capability. The novel material was then used as the magnetic solid‐phase extraction sorbent to extract eight non‐steroidal anti‐inflammatory drugs from water samples. Combined with high‐performance liquid chromatography and ultraviolet detection, under the optimal conditions, the developed method exhibited wide linearity ranges (1–1000, 2–1000, and 5–1000 ng/mL) with recoveries of 88.0–108.6% and low limits of detection (0.3–1.5 ng/mL). Acceptable precision was obtained with satisfactory intra‐ and inter‐day relative standard deviations of 0.4–4.4% (= 3) and 1.1–5.5% (= 3), respectively. Batch‐to‐batch reproducibility was acceptable with relative standard deviations <9.7%. The hydrophilic magnetic nanoparticle featured with quaternary ammonium groups showed high analytical potential for acidic analytes in environmental water samples.

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