Results 141 to 150 of about 2,120 (176)

Ionic liquids in dispersive liquid-liquid microextraction

TrAC Trends in Analytical Chemistry, 2013
In this review, we summarize the most recent analytical developments aimed at employing Ionic liquids (ILs) in dispersive liquid-liquid microextraction (DLLME). Four main operation modes can be distinguished: (1) conventional IL-DLLME; (2) temperature-controlled IL-DLLME; (3a) ultrasound-assisted, (3b) microwave-assisted or (3c) vortex-assisted IL ...
María J. Trujillo-Rodríguez, Priscilla Rocío-Bautista, Verónica Pino, Ana M. Afonso   +3 more
openaire   +1 more source

Ionic liquid/ionic liquid dispersive liquid–liquid microextraction

Journal of Separation Science, 2011
AbstractIn this article, a novel and simple microextraction method, termed ionic liquid/ionic liquid dispersive liquid–liquid microextraction (IL/IL‐DLLME), has been designed and developed for the rapid enrichment and analysis of environmental pollutants.
Ru-Song, Zhao, Xia, Wang, Fu-Wei, Li, Shan-Shan, Wang, Li-Li, Zhang, Chuan-Ge, Cheng   +5 more
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Preconcentration and determination of methyl methacrylate by dispersive liquid–liquid microextraction

Journal of Separation Science, 2012
This article describes the preconcentration of methyl methacrylate in produced water by the dispersive liquid–liquid microextraction using extraction solvents lighter than water followed by gas chromatography. In the present experiments, 0.4 mL dispersive solvent (ethanol) containing 15.0 μL extraction solvent (toluene) was rapidly injected into the ...
Bahram, Mokhtari, Nasser, Dalali, Kobra, Pourabdollah   +2 more
openaire   +2 more sources

Dispersive Liquid–Liquid Microextraction: Trends in The Analysis of Biological Samples

Bioanalysis, 2015
Dispersive liquid-liquid microextraction (DLLME) is a recent microextraction technique that was first developed by Rezaee and co-workers in 2006. It allows the simultaneous extraction and preconcentration of analytes into a micro-volume of extracting solvent based on a ternary solvent system involving an aqueous phase, a nonpolar water immiscible high ...
Olatz, Zuloaga, Maitane, Olivares, Patricia, Navarro, Asier, Vallejo, Ailette, Prieto   +4 more
openaire   +2 more sources

Dispersive liquid-liquid microextraction for the quantification of venlafaxine in environmental waters

Journal of Environmental Management, 2018
The present work describes a new methodology for the detection of the antidepressant venlafaxine (VEN) in aquatic environments using dispersive liquid-liquid microextraction followed by high performance liquid chromatography with fluorescence detection (DLLME-HPLC-FLD).
Diana L D, Lima, Carla Patrícia, Silva, Marta, Otero   +2 more
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Dispersive liquid–liquid microextraction in food analysis. A critical review

Analytical and Bioanalytical Chemistry, 2013
An extensive critical evaluation of the application of dispersive liquid-liquid microextraction (DLLME) combined with chromatographic and atomic-spectroscopic methods for the determination of organic and inorganic compounds is presented. The review emphasizes the procedures used for the prior treatment of food samples, which are very different from the
Pilar, Viñas, Natalia, Campillo, Ignacio, López-García, Manuel, Hernández-Córdoba   +3 more
openaire   +2 more sources

Automated Agitation-Assisted Demulsification Dispersive Liquid–Liquid Microextraction

Analytical Chemistry, 2016
Dispersive liquid-liquid microextraction (DLLME) is an extremely fast and efficient sample preparation procedure. For its capability and applicability to be fully exploited, full automation of its operations seamlessly integrated with analysis is necessary. In this work, for the first time, fully automated agitation-assisted demulsification (AAD)-DLLME
Liang, Guo, Shao Hua, Chia, Hian Kee, Lee   +2 more
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Determination of phenolic compounds in honey using dispersive liquid–liquid microextraction

Journal of Chromatography A, 2014
Honey is a valuable functional food rich in phenolic compounds with a broad spectrum of biological activities. Analysis of the phenolic compounds in honey is a very promising tool for the quality control, the authentication and characterization of botanical origin, and the nutraceutical research.
CAMPONE, LUCA, PICCINELLI, ANNA LISA, PAGANO, IMMA, Sonia Carabetta, Rosa Di Sanzo, Mariateresa Russo, RASTRELLI, Luca   +6 more
openaire   +4 more sources

A ionic liquid for dispersive liquid-liquid microextraction of phenols

Journal of Analytical Chemistry, 2009
In the present study, a new solvent-free mode of liquid phase microextraction termed ionic liquid dispersive liquid-liquid microextraction (IL-DLLME) was developed. Four phenols were used as model compounds in the development and evaluation of the procedure.
Y. C. Fan, M. L. Chen, C. Shen-Tu, Y. Zhu   +3 more
openaire   +1 more source

Dispersive liquid-liquid microextraction for determination of organic analytes

TrAC Trends in Analytical Chemistry, 2010
Abstract One of the most important objectives of modern analytical chemistry is miniaturization, simplification and automation of the whole analytical procedure, especially to speed up sample treatment, which is currently the bottleneck of analysis.
Antonio V. Herrera-Herrera, María Asensio-Ramos, Javier Hernández-Borges, Miguel Ángel Rodríguez-Delgado   +3 more
openaire   +1 more source