Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Ojeda, C. Bosch; Rojas, F. Sánchez

doi:10.1007/s10337-011-2124-1

Cited by 66 publications

(22 citation statements)

References 181 publications

(208 reference statements)

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“…Since the invention of DLLME technology in 2006 [21], there has been a growing number of publications focused on this extraction technique, including original articles and reviews [22][23][24][25][26][27][28][29][30][31][32].…”

Section: Original Studymentioning

confidence: 99%

Evaluation of dispersive liquid-liquid microextraction for the determination of cobalt and cadmium by flame atomic absorption spectrometry: application in water and food samples

Ojeda¹,

Rojas²

2014

Sample Preparation

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Dispersive liquid-liquid microextraction (DLLME) was applied to the separation and preconcentration of Cd(II) and Co(II) from water and food samples. The influence of the following analytical parameters on the quantitative recoveries of cadmium and cobalt were investigated: pH, extraction solvent volume, dispersing solvent volume and type, and concentration of chelating agent. Under the optimized conditions, the detection limits were 2 μg L

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Section: Original Studymentioning

confidence: 99%

Evaluation of dispersive liquid-liquid microextraction for the determination of cobalt and cadmium by flame atomic absorption spectrometry: application in water and food samples

Ojeda¹,

Rojas²

2014

Sample Preparation

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“…The resultant sedimented phase is read for direct analysis by GC or LC. Since its introduction, DLLME has gained popularity as a simple, fast and reliable tool for sampling preparation of a variety of analytes, as can be seen in recent reviews (Xiao-Huan et al, 2009;Ojeda & Rojas, 2009;Rezaee et al 2010;Herrera-Herrera et al, 2010). DLLME has extensively been used for direct extraction of pesticides from aqueous samples such water, fruit juice and wine ( Table 2).…”

Section: Dispersive Liquid-liquid Microextraction (Dllme)mentioning

confidence: 99%

Current Trends in Liquid-Liquid Microextraction for Analysis of Pesticide Residues in Food and Water

Cunha¹,

Fernandes²,

Oliveira³

2011

Pesticides - Strategies for Pesticides Analysis

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“…Dispersive liquid-liquid microextraction (DLLME), first introduced by Rezaee et al (2006), has been used for extraction of analytes from aqueous samples due to its advantages including high enrichment factor, simplicity of operation, and low cost (Zhang et al, 2013;Ojeda and Rojas, 2011). In addition, IL-based dispersive liquid-liquid microextraction (IL-DLLME) was also used in the extraction of not only organics like phenolic compounds (Jiang et al, 2011), phthalate and fluoroquinolones (Vázquez et al, 2012), but also inorganic elements and species such as Au(III)/Ag(I) (Ashkenani and Taher, 2012), Tl(I) (Anthemidis and Ioannou, 2012), Cr(III) and Cr(VI) (López-García et al, 2012) from water samples.…”

Section: Introductionmentioning

confidence: 99%

Dispersive liquid–liquid microextraction of silver nanoparticles in water using ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate

Chen

Sun

et al. 2016

Journal of Environmental Sciences

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Using the ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate as the extractant and methanol as the dispersion solvent, a dispersive liquid-liquid microextraction method was developed to extract silver nanoparticles (AgNPs) from environmental water samples.Parameters that influenced the extraction efficiency such as IL concentration, pH and extraction time were optimized. Under the optimized conditions, the highest extraction efficiency for AgNPs was above 90% with an enrichment factor of >90. The extracted AgNPs in the IL phase were identified by transmission electron microscopy and ultraviolet-visible spectroscopy, and quantified by inductively coupled plasma mass spectrometry after microwave digestion, with a detection limit of 0.01 μg/L. The spiked recovery of AgNPs was 84.4% with a relative standard deviation (RSD) of 3.8% (n = 6) at a spiked level of 5 μg/L, and 89.7% with a RSD of 2.2% (n = 6) at a spiked level of 300 μg/L, respectively. Commonly existed environmental ions had a very limited influence on the extraction efficiency. The developed method was successfully applied to the analysis of AgNPs in river water, lake water, and the influent and effluent of a wastewater treatment plant, with recoveries in the range of 71.0%-90.9% at spiking levels of 0.11-4.7 μg/L. IntroductionSilver nanoparticles (AgNPs) have been applied in various products, such as plastics, household textiles, medicine, and cosmetics, due to their excellent antimicrobial properties (Benn and Westerhoff, 2008;Blaser et al., 2008;Emam et al., 2013;Meyer et al., 2011;Quadros and Marr, 2011;Sondi and Salopek-Sondi, 2004;Shahverdi et al., 2007;Sallum et al., 2014;Tolaymat et al., 2010). As a result, AgNPs can be released into the environment, and result in potential risk to human beings and other biological organisms Khan et al., 2011;Losert et al., 2014;Sharma et al., 2014;Tian et al., 2013;Yu et al., 2012). It was reported that orally delivered AgNPs induced deleterious effects on the liver and heart for mammals (Elle et al., 2013). Additionally, AgNPs could accumulate and transport along the food chain (Zhao and Wang, 2010). However, the mechanism of AgNP toxicity is not clear, although it was reported that the morphological A v a i l a b l e o n l i n e a t w w w . s c i e n c e d i r e c t . c o m ScienceDirect w w w . e l s e v i e r . c o m / l o c a t e / j e s characteristics such as surface charge, particle size and shape were related to their toxicity (Badawy et al., 2011;Burkowska-But et al., 2014;Carlson et al., 2008;Pal et al., 2007). This lack of knowledge could be ascribed to the complexity of nanoparticles themselves, as well as the lack of methods that are capable of monitoring the trace AgNPs from complex environmental and biological samples without disturbing their characteristics (Farré et al., 2011).4 1 ( 2 0 1 6 ) 2 1 1 -2 1To date, several methods have been developed for the separation and determination of AgNPs such as field flow fractionation, anodic particle coulometry, and hydrodynamic chromato...

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Separation and Preconcentration by Dispersive Liquid–Liquid Microextraction Procedure: Recent Applications

Cited by 66 publications

References 181 publications

Evaluation of dispersive liquid-liquid microextraction for the determination of cobalt and cadmium by flame atomic absorption spectrometry: application in water and food samples

Evaluation of dispersive liquid-liquid microextraction for the determination of cobalt and cadmium by flame atomic absorption spectrometry: application in water and food samples

Current Trends in Liquid-Liquid Microextraction for Analysis of Pesticide Residues in Food and Water

Dispersive liquid–liquid microextraction of silver nanoparticles in water using ionic liquid 1-octyl-3-methylimidazolium hexafluorophosphate

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