Deep eutectic solvent-based dispersive liquid–liquid microextraction

2016 ◽  
Vol 8 (12) ◽  
pp. 2576-2583 ◽  
Author(s):  
Mir Ali Farajzadeh ◽  
Mohammad Reza Afshar Mogaddam ◽  
Mahdi Aghanassab
Keyword(s):  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Extraction Solvent ◽  
Dispersive Liquid Liquid Microextraction ◽  
First Time ◽  
Liquid Microextraction

In this study, for the first time, a new kind of solvent termed deep eutectic solvents has been synthesized and used as the extraction solvent in a dispersive liquid–liquid microextraction method.

A solidified floating organic drop-dispersive liquid-liquid microextraction based on in-situ formed fatty acid-based deep eutectic solvents for extraction of benzophenone-UV filters from water samples

2021 ◽  
Author(s):  
Huazi Wang ◽  
Qinqin Xu ◽  
Jinglong Jiao ◽  
Hai Wu
Keyword(s):  
Fatty Acid ◽  
Water Samples ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Uv Filters ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

A solidified floating organic drop-dispersive liquid-liquid microextraction (SFOD-DLLME) was established for extraction of four benzophenone-ultraviolet filters (BP-UV filters) from water samples using a fatty acid deep eutectic solvent (DES) as...

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

RSC Advances ◽  
2016 ◽  
Vol 6 (53) ◽  
pp. 47990-47996 ◽  
Author(s):  
Mir Ali Farajzadeh ◽  
Mohammad Reza Afshar Mogaddam ◽  
Behruz Feriduni
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Aqueous Samples ◽  
Extraction Solvent ◽  
Polycyclic Aromatic ◽  
Simultaneous Synthesis ◽  
New Generation ◽  
Liquid Microextraction

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.

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

2022 ◽  
Author(s):  
Qian Liu ◽  
Zhiqiang Li ◽  
Liulin Wei ◽  
Xiaomei Chen ◽  
Yidong Xu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Organophosphorus Pesticides ◽  
Deep Eutectic Solvent ◽  
Extraction Process ◽  
Good Precision ◽  
Pretreatment Method ◽  
Dispersive Liquid Liquid Microextraction ◽  
First Time ◽  
Liquid Microextraction ◽  
Natural Rivers

Abstract 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.

Simple and Rapid Dual-Dispersive Liquid–Liquid Microextraction as an Innovative Extraction Method for Uranium in Real Water Samples Prior to the Determination of Uranium by a Spectrophotometric Technique

2017 ◽  
Vol 100 (6) ◽  
pp. 1848-1853 ◽  
Author(s):  
Naeemullah Khan ◽  
Mustafa Tuzen ◽  
Tasneem Gul Kazi
Keyword(s):  
Aqueous Phase ◽  
Matrix Effects ◽  
Extraction Solvent ◽  
Dispersive Liquid Liquid Microextraction ◽  
Optimized Conditions ◽  
First Time ◽  
Extracting Solvent ◽  
Liquid Microextraction ◽  
Liquid Process

Abstract An innovative, rapid, and simple dual-dispersive liquid–liquid microextraction (DDLL-ME) approach was used to extract uranium from real samples for the first time. The main objective of this study was to disperse extraction solvent by using an air-agitated syringe system to overcome matrix effects and avoid dispersion of hazardous dispersive organic solvents by using heat. The DDLL-ME method consisted of two dispersive liquid–liquid extraction steps with chloroform as the extracting solvent. Uranium formed complexes with 4-(2-thiazolylazo) resorcinol in the aqueous phase and was extracted in extracting solvent (chloroform) after the first dispersive liquid–liquid process. Uranium was then back-extracted in the acidic aqueous phase in a second dispersive liquid–liquid process. Finally, uranium was determined by a spectrophotometric detection technique. The variables that played a key role in the proposed method were studied and optimized. The LOD and sensitivity enhancement factor for uranium were found to be 0.60 µg/L and 45, respectively, under optimized conditions. Calibration graphs were found to be linear in the range of 5.0–600 µg/L. The RSD was 2.5%. Reliability of the proposed method was verified by analyzing certified reference material TM-28.3.

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