A nanocomposite consisting of poly(methyl methacrylate), graphene oxide and Fe3O4 nanoparticles as a sorbent for magnetic solid-phase extraction of aromatic amines

Graphene oxide (GO) was conjugated to magnetite nanoparticles and then coated with poly(methyl methacrylate) to obtain a nanomaterial of the type PMMA@GO-Fe 3 O 4 , which is shown to be a viable sorbent for magnetic solid-phase extraction. The nanocomposite was characterized by SEM, TEM, XRD, VSM an...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2018-01, Vol.185 (1), p.1-8, Article 14
Main Authors: Bashtani, Elham, Amiri, Amirhassan, Baghayeri, Mehdi
Format: Article
Language:English
Subjects:
Amines
Analytical Chemistry
Aniline
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Dichloromethane
Extraction processes
Fourier transforms
Graphene
Iron oxides
Microengineering
Nanochemistry
Nanocomposites
Nanomaterials
Nanoparticles
Nanotechnology
Original Paper
Polymethyl methacrylate
Solids
Toluidine
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Summary:Graphene oxide (GO) was conjugated to magnetite nanoparticles and then coated with poly(methyl methacrylate) to obtain a nanomaterial of the type PMMA@GO-Fe 3 O 4 , which is shown to be a viable sorbent for magnetic solid-phase extraction. The nanocomposite was characterized by SEM, TEM, XRD, VSM and FTIR spectroscopy. It was applied to the extraction of the aromatic amines aniline, N,N-dimethylaniline, o-toluidine, and 3-chloroaniline. Under optimal conditions, the preconcentration factors range from 139 to 173. Following desorption with dichloromethane, the amines were quantified by GC. Analytical figures of merit include (a) a linear range extending from 0.007–100 ng mL −1 , (b) detection limits between 2 and 6 pg mL −1 ; and (c) relative standard deviations between 5.9 and 8.6% (for n  = 5; at 0.05, 5.0 and 50 ng mL −1 levels, respectively). The method was successfully applied to the determination of aromatic amines in spiked real water samples and gave recoveries in the range of 90.3%–99.0%. Graphical abstract A magnetic sorbent was fabricated by deposition of poly(methyl methacrylate) onto Fe 3 O 4 -magnetized graphene oxide. It was applied to the extraction and preconcentration of aromatic amines from water samples prior to their gas chromatography–flame ionization detector (GC–FID) determination.
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-017-2587-3