Facile and tunable fabrication of Fe3O4/graphene oxide nanocomposites and their application in the magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from environmental water samples

Han, Qiang; Wang, Zonghua; Xia, Jianfei; Chen, Sha; Zhang, Xiaoqiong

doi:10.1016/j.talanta.2012.09.046

Cited by 348 publications

(116 citation statements)

References 47 publications

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“…The study of the GO/Fe O ratio (w/w) was made for 1:5 and 1:1 in accordance with the best results obtained in the work conducted by Han et al [ 29 ]. The results were similar for the TNT extraction with a ratio of 1:5 and 1:1.…”

Section: Resultssupporting

confidence: 82%

“…The synthesis of GO/Fe O nanocomposite is based on a previous work conducted by Han et al [ 29 ]. Fe O nanoparticles were dispersed in 1 M HNO solution through sonication for 30 min, generating a solution containing 150 mg mL of Fe O with positively charged surface.…”

Section: Synthesis Of Go/fe O Nanocompositementioning

confidence: 99%

“…The adsorbents used in the MSPE technique possess a magnetic phase mainly composed of an iron mineral or iron oxides such as magnetite (Fe O ) or maghemite (γ-Fe O ) and a sorbent, including organic and inorganics polymers [ 23 ] and metal oxides [ 24 ]. Modified silica (C18, C8, and phenyl groups) [ 25 ], molecularly imprinted polymers [ 26 ], and recently carbon nanotubes [ 27 ], graphene [ 28 ], and GO [ 29 ] have been employed. The use of sorbents decorated with magnetic solids is an excellent alternative for preconcentrating and isolating different chemical species because it synergically combines the excellent sorbent capacity with easy sorbent handling by means of an external magnetic field.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, GO hybrid materials have gained interest in analytical sample preparation. The GO/Fe O magnetic nanocomposite has been synthesized and used in MSPE for adsorption of polycyclic aromatic hydrocarbons (PAHs) [ 29 ], drugs [ 32 ], and PCBs [ 33 ], among others, but the number of applications is still scarce.…”

Section: Introductionmentioning

confidence: 99%

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Graphene oxide/Fe3O4 as sorbent for magnetic solid-phase extraction coupled with liquid chromatography to determine 2,4,6-trinitrotoluene in water samples

2017

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A fast, simple, economical, and environmentally friendly magnetic solidphase extraction (MSPE) procedure has been developed to preconcentrate 2,4,6-trinitrotoluene (TNT) from water samples prior to determination by liquid chromatography-UV-Vis employing graphene oxide/Fe O nanocomposite as sorbent. The nanocomposite synthesis was investigated, and the MSPE was optimized by a multivariate approach. The optimum MSPE conditions were: 40 mg of nanocomposite, 10 min of vortex extraction, 1 mL of acetonitrile as eluent, and 6 min of desorption in an ultrasonic bath. Under the optimized experimental conditions, the method was evaluated obtaining a preconcentration factor of 153. The linearity of the method was studied from 1 to 100 µg L (N!=!5), obtaining a correlation coefficient of 0.994. The relative standard deviation and limit of detection This is a previous version of the article published in Analytical and Bioanalytical Chemistry. 2017, 409(10): 2665-2674. doi:10.1007 were found to be 12% (n!=!6, 10 µg L ) and 0.3 µg L , respectively. The applicability of the method was investigated, analyzing three types of water samples (i.e., reservoir and drinking water and effluent wastewater) and recovery values ranged between 87 and 120% (50 µg L spiking level) showing that the matrix had a negligible effect upon extraction. Finally, the semiquantitative Eco-Scale metrics confirmed the greenness of the developed method.

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Section: Resultssupporting

confidence: 82%

Section: Synthesis Of Go/fe O Nanocompositementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Graphene oxide/Fe3O4 as sorbent for magnetic solid-phase extraction coupled with liquid chromatography to determine 2,4,6-trinitrotoluene in water samples

2017

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“…Clean up by the MSPE can save the time of extraction, because MNPs can be readily collected by an external magnetic field, and also further purification such as centrifugation or filtration isn't necessary for this procedure 26 . Aptamers that bind to OTA, in the presence of Mg…”

Section: Magnetic Solid Phase Extraction By Aptamertargeted Magnetic mentioning

confidence: 99%

Different Applications of Magnetic Nanoparticles in the Rapid Monitoring of Ochratoxin A

Sargazi¹,

Majd²

2017

Orient. J. Chem

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Toxic effects of mycotoxins are still an unresolved subject for health of humans and animals. Therefore, several methods has been created to determine and eliminate mycotoxins from foodstuffs, and also are developing. For instance, utilization of magnetic nanoparticles (MNPs) when are combined with different analytical tools is one of the developing methods which could be useful for extraction of mycotoxins. As in some methods, they were employed as newfound adsorbents in magnetic solid phase extraction approaches. In some other methods, MNPs were used for immobilization of antibodies to enhance the efficiency of the analytical tools such as square wave voltammetry. Or in another method, amine-functionalized MNPs were reacted with ochratoxin A (OTA) to enhance performance of chemiluminescence immunoassay. Results of all methods were showed that utilizing of MNPs could reduce cost, easy preparation, and increase the stability, speed, sensitivity, precision and reproducibility. So, these new methods have elicited great hopes to be suitable alternative for older methods.

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Extraction Methods Facilitated by the use of Magnetic Nanoparticles

Rocío‐Bautista

Pino

2015

Analytical Separation Science

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Magnetic nanoparticles (MNPs) are a group of nanoparticles (NPs) that present superparamagnetic properties. MNPs are composed of a magnetic solid phase that is responsible for the magnetic properties. The characterization of MNPs is usually accomplished using techniques such as X‐ray diffraction (XRD), transmission electron microscopy (TEM), or scanning electron microscopy (SEM). Several review articles have been recently devoted to MNPs in analytical chemistry and particularly to sample preparation. This chapter presents extraction methods facilitated by the use of MNPs, with particular emphasis on MNP types and extraction applications. The relatively simple tuneability of MNPs, by easily anchoring task‐specific sorbents of quite different nature (silica based, carbon and derivatives based, polymeric based, and so on), opens a number of possible combinations and enormously extends its future applications

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Facile and tunable fabrication of Fe3O4/graphene oxide nanocomposites and their application in the magnetic solid-phase extraction of polycyclic aromatic hydrocarbons from environmental water samples

Cited by 348 publications

References 47 publications

Graphene oxide/Fe3O4 as sorbent for magnetic solid-phase extraction coupled with liquid chromatography to determine 2,4,6-trinitrotoluene in water samples

Graphene oxide/Fe3O4 as sorbent for magnetic solid-phase extraction coupled with liquid chromatography to determine 2,4,6-trinitrotoluene in water samples

Different Applications of Magnetic Nanoparticles in the Rapid Monitoring of Ochratoxin A

Extraction Methods Facilitated by the use of Magnetic Nanoparticles

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