Journal
ANALYTICAL METHODS
Volume 6, Issue 24, Pages 9725-9730Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ay02027h
Keywords
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Funding
- National Natural Science Foundation of China [21005050]
- Beijing Natural Science Foundation [2133061]
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A facile approach was used to prepare Fe3O4-graphene oxide (Fe3O4-GO) nanocomposites, and the application of these nanocomposites was investigated in the magnetic solid-phase extraction (MSPE) coupled with high-performance liquid chromatography with diode-array detection (HPLC-DAD) of three sulfonamides (SAs) from water samples. The Fe3O4-GO nanocomposites possess the advantages of both GO and Fe3O4. The Fe3O4-GO nanocomposites were characterized by scanning electron microscopy and vibrating-sample magnetometry. Sulfadiazine (SDZ), sulfadimidine (SDD) and sulfathiazole (STZ) were selected as target analytes to validate the extraction performance of the Fe3O4-GO nanocomposites as a MSPE adsorbent. The results indicated that the limits of detection of these sulfonamides were in the range of 0.05-0.10 mu g mL(-1), that the recoveries ranged between 67.4% and 119.9%, and that the linearity (R-2 > 0.9900) and precision (between 0.04% and 9.03%) were good. The developed method can be used to determine and monitor SA residues in environmental water samples.
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