Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1463, Issue -, Pages 1-10Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2016.08.003
Keywords
Three dimensional graphene/ZnFe2O4; Magnetic solid-phase extraction; Bisphenol analogs; Water sample
Funding
- General project of scientific research of the education department of Liaoning province [L2015206]
- Liaoning provincial department of education innovation team projects [LT2015012]
- Liaoning scientific instruments service sharing information platform ability construction funds [201507A003]
- foundation of 211 project for innovative talent training, liaoning university
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The synthesis of a magnetic nanoporous three dimensional graphene (3DG)/ZnFe2O4 composite has been achieved. Through formation of graphene hydrogel, ZnFe2O4 magnetic particles was successfully introduced into the nanoporous 3DG, resulting in a magnetic porous carbon material. The morphology, structure, and magnetic behavior of the as-prepared 3DG/ZnFe2O4 were characterized by using the techniques of SEM, XRD, BET, VSM, FTIR, Raman and TGA. The 3DG/ZnFe2O4 has a high specific surface area and super paramagnetism. Its performance was evaluated by the magnetic solid-phase extraction of nine bisphenol analogs (BPs) from water samples followed by HPLC analysis, and showed excellent adsorption capability for the nine target compounds. Under optimized condition, the lower method detection limits (0.05-0.18 ngmL(-1)), the higher enrichment factors (800 fold) and good recoveries (95.1-103.8%) with relative standard deviation (RSD) values less than 6.2% were achieved. The results indicated that the developed method based on the use of 3DG/ZnFe2O4 as the magnetic adsorbent has the advantages of convenience and high efficiency, and can be successfully applied to detect the nine BPs in real water samples. (C) 2016 Elsevier B.V. All rights reserved.
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