A nanocomposite consisting of poly, graphene oxide and Fe.sub.3O.sub.4 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.sub.3O.sub.4, which is shown to be a viable sorbent for magnetic solid-phase extraction. The nanocomposite was characterized by SEM, TEM, XRD,...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2018-01, Vol.185 (1)
Main Authors: Bashtani, Elham, Amiri, Amirhassan, Baghayeri, Mehdi
Format: Article
Language:English
Subjects:
Aromatic amines
Graphene
Graphite
Magnetite
Methyl methacrylate
Nanoparticles
Online Access:Get full text
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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.sub.3O.sub.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.sup.-1, (b) detection limits between 2 and 6 pg mL.sup.-1; and (c) relative standard deviations between 5.9 and 8.6% (for n = 5; at 0.05, 5.0 and 50 ng mL.sup.-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%.
ISSN:0026-3672
DOI:10.1007/s00604-017-2587-3