Fe3O4-modified graphene oxide as a sorbent for sequential magnetic solid phase extraction and dispersive liquid phase microextraction of thallium

Nazari, Saeid; Mehri, Ashraf; Hassannia, Asma Sepehri

doi:10.1007/s00604-017-2340-y

Cited by 42 publications

(9 citation statements)

References 30 publications

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“…GO was fabricated using expanded graphite, according to a modified Hummer's method reported in the literature . In brief, graphite powder (3 g) was mixed with NaNO 3 (1.5 g), and H 2 SO 4 (69 mL) was then added.…”

Section: Methodsmentioning

confidence: 99%

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

2018

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BACKGROUND: Magnetic graphene oxide nanocomposite has been proposed as a promising and sustainable sorbent for the extraction and separation of target analytes from food matrices. Sample preparation based on nanocomposite presents several advantages, such as desired efficiency, reasonable selectivity and high surface-area-to-volume ratio. RESULTS: A new graphene oxide/Fe 3 O 4 @polythionine (GO/Fe 3 O 4 @PTh) nanocomposite sorbent was introduced for magnetic dispersive solid-phase extraction and flame atomic absorption spectrometric detection of zinc(II) in water, flour, celery and egg.To fabricate the sorbent, an oxidative polymerization of thionine on the surface of magnetic GO was applied, while polythionine was simply employed as a surface modifier to improve extraction yield. The properties of the sorbent were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray analysis, vibrating sample magnetometry and Fourier transform-infrared spectroscopy. The calibration curve showed linearity in the range of 0.5-30 ng mL −1 . Limits of detection (S/N = 3) and quantification (S/N = 10) were 0.08 and 0.5 ng mL −1 , respectively. CONCLUSION: The method was applied for trace-level determination of Zn(II) in water and food samples, and its validation was investigated by recovery experiments and analyzing certified reference material. Effect of ionic strengthAddition of electrolyte to the sample increases the ionic strength, and thus improves the extraction yield, which is due to the salting-out influence. Thus different concentration levels of NaCl (0-10% w/v) were added to the sample solution to investigate J Sci Food Agric 2018; 98: [3571][3572][3573][3574][3575][3576][3577][3578][3579]

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Section: Methodsmentioning

confidence: 99%

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

2018

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“…In 2017, Nazari et al synthesized a GO/Fe 3 O 4 conjugate to the surface of which a 4-methyl-2(2pyrazinyl)-1,3-thiazole-5-carboxy acid (MPTCA) chelating agent was covalently linked and used it for sequential MSPE of thallium [76]. The chelator was employed to enhance the affinity of the sorbent towards Tl(III) ions in order to enhance the extraction efficiency.…”

Section: Extraction Of Thalliummentioning

confidence: 99%

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

et al. 2020

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Graphene oxide is a compound with a form similar to graphene, composed of carbon atoms in a sp2 single-atom layer of a hybrid connection. Due to its significant surface area and its good mechanical and thermal stability, graphene oxide has a plethora of applications in various scientific fields including heterogenous catalysis, gas storage, environmental remediation, etc. In analytical chemistry, graphene oxide has been successfully employed for the extraction and preconcentration of organic compounds, metal ions, and proteins. Since graphene oxide sheets are negatively charged in aqueous solutions, the material and its derivatives are ideal sorbents to bind with metal ions. To date, various graphene oxide nanocomposites have been successfully synthesized and evaluated for the extraction and preconcentration of metal ions from biological, environmental, agricultural, and food samples. In this review article, we aim to discuss the application of graphene oxide and functionalized graphene oxide nanocomposites for the extraction of metal ions prior to their determination via an instrumental analytical technique. Applications of ionic liquids and deep eutectic solvents for the modification of graphene oxide and its functionalized derivatives are also discussed.

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“…Nazari et al. prepared graphene oxide supported magnetic iron oxide covalently bounded to a chelator compound for use as sorbent particles in magnetic SPE of thallium from aqueous samples. Analysis of the eluted solutions were made by graphite furnace atomic spectroscopy (GFAAS).…”

Section: Off‐line Techniquesmentioning

confidence: 99%

The role of graphene‐based sorbents in modern sample preparation techniques

Toffoli

Maciel

Fumes

et al. 2017

J of Separation Science

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The application of graphene-based sorbents in sample preparation techniques has increased significantly since 2011. These materials have good physicochemical properties to be used as sorbent and have shown excellent results in different sample preparation techniques. Graphene and its precursor graphene oxide have been considered to be good candidates to improve the extraction and concentration of different classes of target compounds (e.g., parabens, polycyclic aromatic hydrocarbon, pyrethroids, triazines, and so on) present in complex matrices. Its applications have been employed during the analysis of different matrices (e.g., environmental, biological and food). In this review, we highlight the most important characteristics of graphene-based material, their properties, synthesis routes, and the most important applications in both off-line and on-line sample preparation techniques. The discussion of the offline approaches includes methods derived from conventional solid-phase extraction focusing on the miniaturized magnetic and dispersive modes. The modes of microextraction techniques called stir bar sorptive extraction, solid phase microextraction, and microextraction by packed sorbent are discussed. The on-line approaches focus on the use of graphene-based material mainly in on-line solid phase extraction, its variation called in-tube solid-phase microextraction, and on-line microdialysis systems.

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Fe3O4-modified graphene oxide as a sorbent for sequential magnetic solid phase extraction and dispersive liquid phase microextraction of thallium

Cited by 42 publications

References 30 publications

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

The role of graphene‐based sorbents in modern sample preparation techniques

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Fe3O4-modified graphene oxide as a sorbent for sequential magnetic solid phase extraction and dispersive liquid phase microextraction of thallium

Cited by 42 publications

References 30 publications

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe3O4@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe3O4@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals

The role of graphene‐based sorbents in modern sample preparation techniques

Contact Info

Product

Resources

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Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg

Magnetic dispersive solid‐phase extraction based on graphene oxide/Fe₃O₄@polythionine nanocomposite followed by atomic absorption spectrometry for zinc monitoring in water, flour, celery and egg