Graphene as a new sorbent in analytical chemistry

Sitko, Rafał; Zawisza, Beata; Malicka, E.

doi:10.1016/j.trac.2013.05.011

Cited by 351 publications

(147 citation statements)

References 79 publications

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“…Sitko et al reviewed the adsorptive properties of G and GO and their applications in preconcentrating organic compounds and tracemetal ions by SPE, SPME and magnetic SPE methods, including trace analysis of water, food, biological and environmental samples using chromatography and spectroscopy techniques [150]. Table 3 summarizes G/GO as SPSs used in SPE, SPME, MSPD and SBSE [25,[151][152][153][154][155][156][157][158][159][160][161][162][163][164][165][166][167].…”

Section: Graphene Graphene Oxide and Other Carbon Nanomaterialsmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

342

123

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A B S T R A C TSample preparation is a crucial bottleneck in the whole analytical process. Solid-phase sorbents (SPSs) have aroused increasing interest in research on sample preparation, as they have key roles in obtaining high clean-up and enrichment efficiency in the analysis of trace targets present in complex matrices. The objective of this review is to provide a broad overview of the recent advances and applications of SPSs in sample preparation prior to chromatographic analysis, during the period 2008-13. We include SPSs, such as molecularly-imprinted polymers, carbon nanomaterials, metallic nanoparticles and metal organic frameworks, focusing on solid-phase extraction, solid-phase microextraction, matrix solid-phase dispersion and stir-bar sorptive extraction of typical pollutants in environmental, biological, food and pharmaceutical samples. We propose remaining challenges and future perspectives to improve development of new SPSs and to apply them further.

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Section: Graphene Graphene Oxide and Other Carbon Nanomaterialsmentioning

confidence: 99%

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Wen

Chen

et al. 2014

TrAC Trends in Analytical Chemistry

342

123

View full text Add to dashboard Cite

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“…On the other hand, GO as a derivative of the graphene synthesis presents numerous oxygen groups on the surface such as epoxy, carboxyl, and hydroxyl radical groups [ 17 ], providing greater hydrophilicity than graphene [ 18 ]. The functional groups of GO are capable of forming hydrogen bonds or electrostatic interactions with aromatics and polar compounds or metal ions [ 18,19,20 ].…”

Section: Introductionmentioning

confidence: 99%

“…The functional groups of GO are capable of forming hydrogen bonds or electrostatic interactions with aromatics and polar compounds or metal ions [ 18,19,20 ]. GO has proved to be an ideal sorbent for SPE [ 21 ] and SPME [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…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. Other advantages are the reduced processing time, amount of sorbent, solvent consumption, and reusability of sorbent [ 18 ]. This sample preparation technique has been employed in the analysis of phenolic compounds [ 23 ], perfluorinated compounds [ 25 ], bisphenol A [ 27 ], antiinflammatory drugs [ 30 ], and pesticides [ 28,31 ].…”

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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“…The successful use of GONPs, particularly with emulsion polymerisation, enables the development of GONP-modified polyHIPE materials, potentially enhancing these materials in terms of stability and surface area. GONP materials have been applied as solid-phase extraction materials [33], progressing from the insoluble graphene solid-phase techniques that were being developed at the time. Due to the presence of oxygen, GONPs have greater solubility in various solvents, allowing an ideal adsorbent material for extraction of small molecules, bulky and aromatic compounds and large biomolecules [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Nanoparticles and Their Influence on Chromatographic Separation Using Polymeric High Internal Phase Emulsions

Choudhury

Duffy

Connolly³

et al. 2017

Separations

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This work presents the first instance of reversed-phase liquid chromatographic separation of small molecules using graphene oxide nanoparticle-modified polystyrene-divinylbenzene polymeric high internal phase emulsion (GONP PS-co-DVB polyHIPE) materials housed within a 200-µm internal diameter (i.d.) fused silica capillary. The graphene oxide nanoparticle (GONP)-modified materials were produced as a potential strategy to increase both the surface area limitations and the reproducibility issues observed in monolithic stationary phase materials. GONP PS-co-DVB polyHIPEs were found to have a surface area up to 40% lower than unmodified polymeric high internal phase emulsion (polyHIPE) stationary phases. However, despite having a surface area significantly lower than that of the unmodified material, the GONP-modified polyHIPEs demonstrated superior analyte adsorption properties. Reducing the GONP material did not have any significant impact on elution order or retention factor of the analytes, which was most likely due to low GONP loading attributed to the 250-nm GONPs utilised. The lower surface area of GONP-modified polyHIPEs provided similar separation efficiency and increased repeatability from injection to injection resulting in % relative standard deviations (%RSDs) of less than 0.6%, indicating the potential offered by graphene oxide (GO)-modified polyHIPES in flow through applications such as adsorption or separation processes.

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Graphene as a new sorbent in analytical chemistry

Cited by 351 publications

References 79 publications

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

Recent advances in solid-phase sorbents for sample preparation prior to chromatographic analysis

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 Nanoparticles and Their Influence on Chromatographic Separation Using Polymeric High Internal Phase Emulsions

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