Simultaneous synthesis of a deep eutectic solvent and its application in liquid–liquid microextraction of polycyclic aromatic hydrocarbons from aqueous samples

Farajzadeh, Mir Ali; Mogaddam, Mohammad Reza Afshar; Feriduni, Behruz

doi:10.1039/c6ra04103e

Cited by 70 publications

(13 citation statements)

References 37 publications

(30 reference statements)

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“…The interactions were further weakened with the presence of choline atom in meta-position which further deactivates the ring thus contributing to the instability of DES structure [30]. The molar ratio of HBA : HBD is kept constant at 1 : 2; it was proposed as the optimum ratio for the DES synthesized from ChCl/4-chlorophenol consistent with previously reported study [31].…”

Section: Synthesis Of Desssupporting

confidence: 79%

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

et al. 2021

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An emulsification liquid–liquid microextraction (ELLME) method was successfully developed using phenolic-based deep eutectic solvent (DES) as an extraction solvent for the determination of phenoxy acid herbicides, 3,6-dichloro-2-methoxybenzoic acid (dicamba) and 2-methyl-4-chlorophenoxyacetic acid (MCPA) in environmental water samples. Five different phenolics-based DESs were successfully synthesized by using phenol (DES 1), 2-chlorophenol (DES 2), 3-chlorophenol (DES 3), 4-chlorophenol (DES 4) and 3,4-dichlorophenol (DES 6) as the hydrogen-bond donor (HBD) and choline chloride as the hydrogen-bond acceptor (HBA). The DESs were mixed at 1 : 2 ratio. A homogeneous solution (clear solution) was observed upon the completion of successful synthesis. The synthesized DESs were characterized by using Fourier transform infrared and nuclear magnetic resonance (NMR). Under optimum ELLME conditions (50 µl of DES 2 as extraction solvent; 100 µl of THF as emulsifier solvent; pH 2; extraction time 5 min), enrichment factor obtained for dicamba and MCPA were 43.1 and 59.7, respectively. The limit of detection and limit of quantification obtained for dicamba were 1.66 and 5.03 µg l −1 , respectively, meanwhile for MCPA were 1.69 and 5.12 µg l −1 , respectively. The developed ELLME-DES method was applied on paddy field water samples, with extraction recoveries in the range of 79–91% for dicamba and 82–96% for MCPA.

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Section: Synthesis Of Desssupporting

confidence: 79%

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

et al. 2021

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“…Based on the favorable features of eco-friendliness, degradable, simple synthesis, and adjustable properties, applying DES in DLLME to avoid toxic reagents has become popular research (G. Li, et al, 2019). Many hydrophobic DES are designed to be directly used as extractants to enrich pollutants in water (Ahmadi, et al, 2019;Deng, et al, 2019;Farajzadeh, et al, 2016;Makoś, et al, 2020). Pirsaheb et al (Pirsaheb, et al, 2018a) hyphenated liquid-phase microextraction and the freezing of DES in detecting pesticides of environmental water, without any disperser solvent.…”

Section: Introductionmentioning

confidence: 99%

Fast Dispersive Liquid-Liquid Microextraction Based on Temperature Switching Deep Eutectic Solvent as A Green Extractant

Liu¹,

Li²,

Wei³

et al. 2022

Preprint

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With the development of research, it was found that the dispersive liquid-liquid microextraction (DLLME) was limited by the tedious extraction process and toxic extractant. A thermo-switchable deep eutectic solvent (DES) was applied to the DLLME as a green extractant in this paper. The DES can be dispersed and aggregated by shaking and heating in the water during the extraction process due to the surfactant and thermo-switchable properties, which shortened the extraction time as low as 5 minutes. The feasibility of the developed method was verified using 4 organophosphorus pesticides and 5 pyrethroids as targets in simulated water samples, which showed good precision (RSD%, 0.8-9.7, n=3) and low detection limit (0.16-0.81 µg L−1, S/N = 3) under the optimal extraction conditions. This method was used to detect the pesticide content in four natural rivers in Xi'an, and the recoveries of these spiked samples at three concentrations levels were among 81–113%. This is the first time to combine the toxic-free and thermo-switchable properties of DES in DLLME to proposes a simple, fast, effective, and green pretreatment method.

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“…Due to its high surface tension, high density, and high polarity, DES has good solvent properties, such as thermal stability [16], chemical stability, and simple synthesis. In recent years, DES are more widely adopted, such as electrochemical research [17,18], natural product analysis [19,20], biological sample analysis [21], food analysis [22], environmental analysis [23], Chinese medicine compound extraction [24], and many other elds.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Deep Eutectic Solvents Extraction of Effective Components from Phellodendron chinense Schneid by Response Surface Methodology

Yue

Cao²,

Wang

et al. 2022

International Journal of Chemical Engineering

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Taking Phellodendron chinense Schneid (PcS) as the raw material with ultrasonic-assisted eutectic solvent, the effects of various DESs on the extractable content of palmatine and berberine in PcS were investigated. On the basis of the single-factor test, the best DES was determined to be choline chloride and 1,3-propanediol (mole ratio 1 : 2). After optimizing by the response surface method, the optimum extraction conditions were as follows: the solid-liquid ratio was 1 : 30 (w/v), water content was 30% (v/v), vortex time was 7 min, ultrasonic time was 20 min, ultrasonic temperature was 60°C, ultrasonic power was 400 W, and the content of palmatine in PcS was 5.421 ± 0.283 mg/g, and the content of berberine in PcS was 15.573 ± 0.539 mg/g. Therefore, DES prepared from choline chloride and 1,3-propanediol can be used to extract palmatine and berberine from PcS. The optimized process conditions determined by the response surface method are reliable and can provide a reference for the green extraction of effective components from PcS.

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Simultaneous synthesis of a deep eutectic solvent and its application in liquid–liquid microextraction of polycyclic aromatic hydrocarbons from aqueous samples

Abstract: New generation of solvents, named deep eutectic solvents, were simultaneously synthesized and used as an extraction solvent in a liquid–liquid microextraction method for the extraction and preconcentration of some polycyclic aromatic hydrocarbons.

Cited by 70 publications

References 37 publications

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

Deep eutectic solvent-based emulsification liquid–liquid microextraction for the analysis of phenoxy acid herbicides in paddy field water samples

Fast Dispersive Liquid-Liquid Microextraction Based on Temperature Switching Deep Eutectic Solvent as A Green Extractant

Optimization of Deep Eutectic Solvents Extraction of Effective Components from Phellodendron chinense Schneid by Response Surface Methodology

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