Mixed hemimicelle solid-phase extraction based on magnetic carbon nanotubes and ionic liquids for the determination of flavonoids

Xiao, Deli; Yuan, Ding; He, Hua; Pham‐Huy, Chuong; Dai, Hao; Wang, Cuixia; Zhang, Chan

doi:10.1016/j.carbon.2014.01.075

Cited by 46 publications

(28 citation statements)

References 38 publications

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“…In order to further demonstrate the superiority of our method, we compared our method with previous reported [1,2,6,8,35,36]. As seen from Table 4, in comparison with other methods, MSPE method had higher extraction ability, thereby it illustrated our method not only had better extraction efficiency but also shortened extraction time to a great extent.…”

Section: Comparison With Other Methodsmentioning

confidence: 85%

A nanocomposite consisting of graphene oxide and Fe3O4 magnetic nanoparticles for the extraction of flavonoids from tea, wine and urine samples

Xiao

Zhao

et al. 2015

Microchim Acta

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We describe a single-step solvothermal method for the preparation of nanocomposites consisting of graphene oxide and Fe 3 O 4 nanoparticles (GO/Fe 3 O 4 ). This material is shown to be useful as a magnetic sorbent for the extraction of flavonoids from green tea, red wine, and urine samples. The nanocomposite is taking advantage of the high surface area of GO and the magnetic phase separation feature of the magnetic sorbent. The nanocomposite is recyclable and was applied to the extraction of flavonoids prior to their determination by HPLC. The effects of amount of surfactant, pH value of the sample solution, extraction time, and desorption condition on the extraction efficiency, and the regeneration conditions were optimized. The limits of detection for luteolin, quercetin and kaempferol range from 0.2 to 0.5 ng mL −1 in urine, from 3.0 to 6.0 ng mL −1 in green tea, and from 1.0 to 2.5 ng mL −1 in red wine. The recoveries are between 82.0 and 101.4 %, with relative standard deviations of <9.3 %.

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Section: Comparison With Other Methodsmentioning

confidence: 85%

A nanocomposite consisting of graphene oxide and Fe3O4 magnetic nanoparticles for the extraction of flavonoids from tea, wine and urine samples

Xiao

Zhao

et al. 2015

Microchim Acta

Self Cite

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“…Xiao et al reported on the extraction of PAHs from urine samples using magnetic CNTs and 1-hexadecyl-3-methylmidazolium bromide, in a mixed hemimicelles MSPE procedure [51]. Figure 3 illustrates the whole procedure of the preparation of surfactant-coated CNTs and the application to simultaneous microextraction and preconcentration of analytes.…”

Section: Other Microextraction Techniquesmentioning

confidence: 99%

Carbon-Based Nanomaterials Functionalized with Ionic Liquids for Microextraction in Sample Preparation

Chatzimitakos

Stalikas

2017

Separations

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Abstract:A large number of carbon-based nanomaterials has been investigated as sorbents in sample preparation, including fullerenes, carbon nanotubes, nanofibers, nanohorns and graphene, as well as their functionalized forms. Taking into account their properties, carbon-based nanomaterials have found a wide range of applications in different sample preparation techniques. Ionic liquids, as an alternative to environmentally-harmful ordinary organic solvents, have attracted extensive attention and gained popularity in analytical chemistry covering different fields like chromatography, electrochemistry and (micro)extraction. Some of the properties of ionic liquids, including polarity, hydrophobicity and viscosity, can be tuned by the proper selection of the building cations and anions. Their tunable nature allows the synthesis of tailor-made solvents for different applications. This review provides a snapshot of the most important features and applications of different carbon-based nanomaterials functionalized with ionic liquids for sample preparation. Emphasis is placed on the description of the different works that have provided interesting results for the use of graphene and carbon nanotubes, in this analytical field.

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“…The results revealed that combining CNTs with ionic liquid not only improves the separation of compounds but also the dispersion of CNTs. Magnetic MWCNTs and ionic liquid have been developed together for the separation of flavonoids in human urine [167]. Developing MWCNTs with an ionic liquid as silanol suppressor with SPE-HPLC system improved the chromatographic separations of antidepressants [168].…”

Section: Mwcnts For Achiral Separation In Biologicsmentioning

confidence: 99%

Application of Carbon Nanotubes in Chiral and Achiral Separations of Pharmaceuticals, Biologics and Chemicals

Hemasa

Naumovski

Maher

et al. 2017

Preprint

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Carbon nanotubes (CNTs) possess unique mechanical, physical, electrical and absorbability properties coupled with their nanometer dimensional scale that renders them extremely valuable for applications in many fields including nanotechnology and chromatographic separation. The aim of this review is to provide an updated overview about the applications of CNTs in chiral and achiral separations of pharmaceuticals, biologics and chemicals. Chiral SWCNTs and MWCNTs have been directly applied for the enantioseparation of pharmaceuticals and biologicals by using them as stationary or pseudostationary phases in chromatographic separation techniques such as high-performance liquid chromatography (HPLC), capillary electrophoresis (CE) and gas chromatography (GC). Achiral MWCNTs have been used for achiral separations as efficient sorbent objects in solid-phase extraction techniques of biochemicals and drugs. Achiral SWCNTs have been applied in achiral separation of biological samples. Achiral SWCNTs and MWCNTs have been also successfully used to separate achiral mixtures of pharmaceuticals and chemicals. Collectively, functionalized CNTs have been indirectly applied in separation science by enhancing the enantioseparation of different chiral selectors whereas, non-functionalized CNTs have shown efficient capabilities for chiral separations by using techniques such as encapsulation or immobilization in polymer monolithic columns.

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Mixed hemimicelle solid-phase extraction based on magnetic carbon nanotubes and ionic liquids for the determination of flavonoids

Cited by 46 publications

References 38 publications

A nanocomposite consisting of graphene oxide and Fe3O4 magnetic nanoparticles for the extraction of flavonoids from tea, wine and urine samples

A nanocomposite consisting of graphene oxide and Fe3O4 magnetic nanoparticles for the extraction of flavonoids from tea, wine and urine samples

Carbon-Based Nanomaterials Functionalized with Ionic Liquids for Microextraction in Sample Preparation

Application of Carbon Nanotubes in Chiral and Achiral Separations of Pharmaceuticals, Biologics and Chemicals

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