Application of deep eutectic solvent based magnetic colloidal gel for dispersive solid phase extraction of ultra-trace amounts of some nitroaromatic compounds in water samples

Zarei, Ali Reza; Nedaei, Maryam; Ghorbanian, Sohrab Ali

doi:10.1016/j.molliq.2017.09.039

Cited by 34 publications

(10 citation statements)

References 27 publications

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“…Recently, magnetic nanoparticles (MNPs) have gained research interest as an extraction approach because of their superior merits including high surface area, highly active surface sites and easy phase separation by an external magnet without the use of centrifugation or a filtration step (Farahani et al, 2015). More recently, an efficient new technique of dispersive magnetic solid-phase extraction (d-MSPE) method based on nanofluids (NF) has been introduced to prevent the agglomeration of MNPs and improve the adsorbent dispersion in the sample solution (Zarei et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Nanofluid of magnetic‐activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid‐phase extraction for the determination and preconcentration of warfarin in biological samples by high‐performance liquid chromatography

Nia

Hadjmohammadi

2021

Biomedical Chromatography

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In this study, for the first time, nanofluid of magnetic-activated charcoal and hydrophobic deep eutectic solvent (AC@Fe 3 O 4 -DES) based dispersive magnetic solid-phase extraction was successfully applied for the determination and preconcentration of warfarin in plasma and urine samples. The hydrophobic DES was prepared by mixing tetramethylammonium chloride (as hydrogen bond acceptor) and thymol (as hydrogen bond donor) and acted simultaneously as both carrier and stabilizer for magnetic nanoparticles. In this method, the nanofluid as a new extraction solvent was rapidly injected into the aqueous sample, which led to improvement of the mass transfer of the analytes into the sorbent and reduction of the extraction time. In the screening step, the fractional factorial design was applied for selecting some important parameters which significantly affected the extraction procedure.The effective parameters were then optimized by Box-Behnken design. Under the optimal conditions, the limits of detection were in the range of 0.3-1.6 ng/ml. A good linear range was observed in the range of 1.0-500.0 ng/ml for water and 5.0-500.0 ng/ml for urine and plasma. The intra-and inter-day relative standard deviations were 2.7-3.2 and 1.9-4.5% for five replications, respectively. Based on the results, the proposed method was successfully applied for the determination of warfarin in biological samples, using high-performance liquid chromatography.

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Section: Introductionmentioning

confidence: 99%

Nanofluid of magnetic‐activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid‐phase extraction for the determination and preconcentration of warfarin in biological samples by high‐performance liquid chromatography

Nia

Hadjmohammadi

2021

Biomedical Chromatography

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“…[17] Remarkably,although there has been considerable development of ionogels based on traditional ILs,g els based on deep eutectic solvents (DESs) have seen much less attention, with relatively few reports of the use of polymers or silicas to immobilise DESs. [18] Arecent study used silica-based materials to immobilise DESs;the resulting gels were referred to as "eutectogels" for the first time,and their application in Li/Liion batteries was demonstrated. [19] However,tothe best of our knowledge,t here are no reports of supramolecular gels formed in DESs by self-assembly.I ns ome cases,t wocomponent "deep eutectic" systems have themselves been applied as supramolecular gelators by addition to traditional solvents [20] -but this is significantly different to developing supramolecular gelators that can be added to DESs,t hus immobilising them, as targeted in this study.Asnoted above, DESs have inherent noncovalent interactions within their structures,w hich may interfere with self-assembly of the LMWG into an anoscale network (or the LMWG may limit DES performance).…”

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confidence: 99%

Self‐Assembled Gels Formed in Deep Eutectic Solvents: Supramolecular Eutectogels with High Ionic Conductivity

et al. 2019

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1,3:2,4‐Dibenzylidene‐d‐sorbitol (DBS), a simple, commercially relevant compound, was found to self‐assemble as a result of intermolecular noncovalent interactions into supramolecular gels in deep eutectic solvents (DESs) based on choline chloride combined with alcohols/ureas. DBS formed gels at a loading of 5 % w/v. Rheology confirmed the gel‐like nature of the materials, electron microscopy and X‐ray diffraction indicated underpinning nanofibrillar DBS networks, and differential scanning calorimetry showed the DES nature of the liquid‐like phase was retained. The ionic conductivities of the gels were similar to those of the unmodified DESs, thus proving the deep eutectic nature of the ionic liquid‐like phase. Gelation was tolerant of ionic additives Li+, Mg2+, and Ca2+; the resulting gels had similar conductivities to electrolyte dissolved in the native DES. The low‐molecular‐weight gelator DBS is thus a low‐cost additive that forms gels in DESs from readily available constituents, with conductivity levels suitable for practical applications.

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“…Deep eutectic solvents (DESs) are green sustainable solvents like ionic liquids [15]. They are usually synthesized from non-toxic compounds that are biodegradable and biocompatible [16].…”

Section: Articlesmentioning

confidence: 99%

Green Sample Preparation Based on Directly Suspended Droplet Microextraction using Deep Eutectic Solvent for Ultra-Trace Quantification of Nitroaromatic Explosives by High Performance Liquid Chromatography

2021

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In the present study, a simple and efficient directly suspended-solidified floating organic droplet microextraction using deep eutectic solvent in combination with high performance liquid chromatography has been proposed for the extraction and ultra-trace quantification of nitroaromatic explosives. The predominant experimental factors such as type and amount of deep eutectic solvent, extraction time, salt concentration and temperature that affect the extraction efficiency of nitroaromatic explosives were considered and optimized. By performing the process in optimal conditions, the calibration curves were linear in the range of 0.6-200 μg/L for 2,4,6-trinitrotolouene (TNT), 0.5-200 μg/L for 2,4-dinitrotolouene (2,4-DNT) and 0.5-200 μg/L for 2,6-dinitrotolouene (2,6-DNT). The limits of detection were 0.19, 0.16 and 0.14 μg/L for TNT, 2,4-DNT and 2.6-DNT, respectively. The relative standard deviations were between 4.8-6.4% (n = 6). The proposed method was successfully applied to the analysis of soil and water samples. At the different spiking levels recovery values ranged between 89 to 102% for soil and water samples, which indicates the negligible effect of the matrix on the extraction process.

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Application of deep eutectic solvent based magnetic colloidal gel for dispersive solid phase extraction of ultra-trace amounts of some nitroaromatic compounds in water samples

Cited by 34 publications

References 27 publications

Nanofluid of magnetic‐activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid‐phase extraction for the determination and preconcentration of warfarin in biological samples by high‐performance liquid chromatography

Nanofluid of magnetic‐activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid‐phase extraction for the determination and preconcentration of warfarin in biological samples by high‐performance liquid chromatography

Self‐Assembled Gels Formed in Deep Eutectic Solvents: Supramolecular Eutectogels with High Ionic Conductivity

Green Sample Preparation Based on Directly Suspended Droplet Microextraction using Deep Eutectic Solvent for Ultra-Trace Quantification of Nitroaromatic Explosives by High Performance Liquid Chromatography

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