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Issue 15, 2014
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Magnetic three-dimensional graphene solid-phase extraction coupled with high performance liquid chromatography for the determination of phthalate esters in fruit juice

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Abstract

In this paper, a three-dimensional graphene-based magnetic nanocomposite (3D-G-Fe3O4) was synthesized and used as an effective adsorbent for the extraction of four phthalate esters (dimethyl(o-)phthalate, diethyl(o-)phthalate, diallyo(o-)phthalate and bis(2-propylheptyl)phthalate) from fruit juice prior to high performance liquid chromatography analysis. The three-dimensional nanoporous structure of the 3D-G endows the new material with a high adsorption capacity. The properties and morphology of the 3D-G-Fe3O4 were characterized by transmission electron microscopy, scanning electron microscopy and infrared spectroscopy. Several experimental parameters affecting the extraction efficiencies, such as the amount of the 3D-G-Fe3O4, extraction time, sample pH, salt addition and desorption conditions were optimized. Under the optimum conditions, the limits of detection (S/N = 3) of the method for the analytes were between 0.04 and 0.13 ng mL−1. The recoveries of the method for the analytes were in the range from 87.0% to 97.8%. The result showed that the 3D-G-Fe3O4 has an excellent adsorption capacity for the analytes.

Graphical abstract: Magnetic three-dimensional graphene solid-phase extraction coupled with high performance liquid chromatography for the determination of phthalate esters in fruit juice

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Article information


Submitted
14 Apr 2014
Accepted
08 May 2014
First published
15 May 2014

Anal. Methods, 2014,6, 5659-5665
Article type
Paper
Author version available

Magnetic three-dimensional graphene solid-phase extraction coupled with high performance liquid chromatography for the determination of phthalate esters in fruit juice

L. Hao, C. Wang, X. Ma, Q. Wu, C. Wang and Z. Wang, Anal. Methods, 2014, 6, 5659
DOI: 10.1039/C4AY00893F

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