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Application of on-line sample preconcentration by large-volume dual preconcentration by isotachophoresis and stacking (LDIS) on straight-channel microchips
In this study, large-volume dual preconcentration by isotachophoresis and stacking (LDIS) which is an on-line sample preconcentration technique...
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Capillary Electrophoresis–Mass Spectrometry for the Direct Analysis of Metabolites in Highly Saline Samples Using In-Capillary Preconcentration
Capillary electrophoresis–mass spectrometry (CE–MS) is gaining interest for metabolomics studies because of its high separation efficiency,...
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Preconcentration and Test Determination of Phenols Using a Polyamide-Based Nanofiber
AbstractNew test tools made of nanofibers based on polyamide-6 (PA-6) for the sorption preconcentration of some phenols as their azo derivatives...
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Microextraction Separation and Preconcentration of Mycotoxins for Their Determination in Food Products
AbstractMycotoxins are among the most dangerous natural food contaminants. The review considers the principles of microextraction methods...
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An overview of preconcentration techniques combined with inductively coupled plasma mass spectrometry for trace element determination in biological studies
In the last decades, the determination of trace elements in biological materials has emerged as an important area of study because of its relevance...
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Flow Injection Analysis Technique for Online Preconcentration of Lead Ions in Airborne Particulate Matter Using Imprinted Polymer as the Sorbent
This work reported a simple and sensitive flow injection analysis (FIA) technique coupled with a Flame Atomic Absorption Spectrophotometer (FAAS) for...
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Sorption Preconcentration of Quercetin Using Molecularly Imprinted Phloroglucinol–Melamine–Formaldehyde Resins
AbstractHydrophilic quercetin-imprinted phloroglucinol–melamine–formaldehyde resins are obtained. The obtained samples are studied by...
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N-rich hypercrosslinked porous polymers for highly efficient preconcentration and sensitive detection of chlorophenols
Three novel N-rich hypercrosslinked porous polymers (NHCP1, NHCP2, and NHCP3) were facilely developed using Friedel-Crafts alkylation. NHCP1 with a...
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Preconcentration of Strontium and Barium by Coprecipitation with Organic Collectors and Their Determination by X-Ray Fluorescence
Abstract—Preconcentration of strontium and barium as complexes with 11 organic reagents by coprecipitation with organic co-precipitants for their...
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Determination of Phenols by Liquid Chromatography-Mass Spectrometry with Sorption Preconcentration on Magnetic Hydrophobized Silica
AbstractA method is proposed for the highly sensitive determination of chloro- and nitrophenols in aqueous solutions, including the preconcentration...
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On-line sample preconcentration by LVSEP-FASI with simple voltage control on Y-channel chips
To eliminate complicated voltage controls for highly sensitive microchip electrophoresis (MCE) analyses on the basis of combining two online sample...
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Chitosan Functionalized Alunite as a Green Composite for Sorption and Preconcentration of Copper: From Parametric Optimization to Application
In this study, alunite was immobilized with chitosan to investigate the effective parameters for its adsorption and preconcentration potential for Cu 2+...
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An eco-friendly and sensitive deep eutectic solvent-based liquid-phase microextraction procedure for extraction preconcentration of Pb (II) ions
In recent years, interest in green solvents, which are environmentally friendly, easy to prepare and biodegradable, and in their applications in...
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Supramolecular solvent based liquid–liquid microextraction and preconcentration of aluminum in water and biological samples
This study is focused on the design of a spectrophotometric technique for the liquid–liquid microextraction (Ss-LLME) of aluminum from water and hair...
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Magnetic dispersive micro-solid-phase extraction integrated with hollow fiber liquid-phase microextraction for preconcentration of trace amounts of chlorpyrifos pesticide in aqueous samples
In the present study, the integration of magnetic dispersive micro-solid-phase extraction (MD-µSPE) with hollow fiber liquid-phase microextraction...
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Microextraction Preconcentration of Chloroacetic Acids with the Flotation Separation of the Extract
AbstractA procedure is developed for liquid–liquid microextraction preconcentration of mono-, di-, and trichloroacetic acids (CAAs) with the...
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Determination of Silver in Environmental Samples by High-resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry after Preconcentration on Bentonite
AbstractIn this research, a preconcentration procedure was developed for the determination of silver in environmental samples using high-resolution...
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Photometric Determination of Novocaine with Preconcentration in Surfactant Micelles
AbstractThe work deals with the extraction and preconcentration of novocaine using mixed surfactants of nonionic (Triton X-114) and anionic (sodium...
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Micellar Thin-Layer Chromatography and Preconcentration of L-Carnitine with Magnetite Nanoparticles
AbstractThin-layer chromatography (TLC) is used to study the chromatographic behavior of L-carnitine in aqueous–organic mobile phases (MPs) and...
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Modern Approaches to the Extraction and Preconcentration of Biologically Active Compounds from Plant Samples by Microextraction Methods for Their Determination by Chromatography–Mass Spectrometry
AbstractThe review considers the main trends in actively develo** methods of solid-phase and liquid–liquid microextraction for the extraction,...
