Results 21 to 30 of about 8,643 (197)

Applications of Liquid-Phase Microextraction in the Sample Preparation of Environmental Solid Samples

open access: yesMolecules, 2014
Solvent extraction remains one of the fundamental sample preparation techniques in the analysis of environmental solid samples, but organic solvents are toxic and environmentally harmful, therefore one of the possible greening directions is its ...
Helena Prosen
doaj   +1 more source

Recent progress in solid- and liquid-phase microextraction methods for the extraction and quantification of current-use pesticides

open access: yesAdvances in Sample Preparation
The widespread use of pesticides has led to their pervasive presence in diverse environmental matrices such as water, air, and soil. Therefore, accurate and reliable determination of pesticides in various sample types is essential.
Seyedeh Bentolhoda Hosseinian   +2 more
doaj   +1 more source

Natural deep eutectic solvents and natural solid biosorbents in microextraction techniques of organic compounds based on chromatographic techniques: A critical review

open access: yesAdvances in Sample Preparation
Analytical chemistry has increasingly focused on the environmental impact of its methods, with significant attention given to green principles in sample preparation. Techniques like Solid-Phase Microextraction (SPME), Micro-Solid-Phase Extraction (µ-SPE),
Eduardo Carasek   +4 more
doaj   +1 more source

Recent Applications of Solid Phase Microextraction Coupled to Liquid Chromatography

open access: yesSeparations, 2021
Solid phase microextraction (SPME) is one of the most popular sample preparation methods which can be applied to organic compounds allowing the simultaneous extraction and pre-concentration of analytes from the sample matrix.
Carlo Zambonin, Antonella Aresta
doaj   +1 more source

Developments in liquid-phase microextraction

open access: yesTrAC Trends in Analytical Chemistry, 2003
Abstract The development of faster, simpler, inexpensive and more environmentally friendly sample-preparation techniques is an important issue in chemical analysis. Recent research trends involve miniaturisation of the traditional liquid-liquid extraction (LLE) principle by greatly reducing the acceptor-to-donor phase ratio.
E Psillakis (), N Kalogerakis()
openaire   +2 more sources

Microextraction and Eco-Friendly Techniques Applied to Solid Matrices Followed by Chromatographic Analysis

open access: yesSeparations
In this review, a 5-year overview on environmentally friendly approaches for the extraction of the most relevant organic pollutants in soil, sediment, particulate matter, and sewage sludge coupled with chromatographic analysis is reported.
Attilio Naccarato   +2 more
doaj   +1 more source

Microextraction Techniques Coupled to Liquid Chromatography with Mass Spectrometry for the Determination of Organic Micropollutants in Environmental Water Samples

open access: yesMolecules, 2014
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents.
Mª Esther Torres Padrón   +3 more
doaj   +1 more source

Metal applications of liquid-phase microextraction [PDF]

open access: yesTrAC Trends in Analytical Chemistry, 2019
This review focuses on the combination of elemental detection techniques with liquid-phase microextraction (LPME), namely, single drop microextraction, hollow fiber based liquid-phase microextraction, dispersive liquid-liquid microextraction, and related techniques.
Miguel Ángel Aguirre   +3 more
openaire   +2 more sources

Integrated Assessment of Lipid Oxidation and Off‐Flavor Formation in Plant Protein Powders

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
Impact of residual lipids on oxylipin and off‐flavor formation in commercial plant proteins: A detailed analysis of precursor‐product relationships by GC‐FID, LC‐MS/MS, and GC‐MS. ABSTRACT The widespread adoption of plant proteins is hindered by their inherent off‐flavors, often linked to lipid oxidation products.
Fernanda Furlan Goncalves Dias   +3 more
wiley   +1 more source

Valproic acid extraction methods in human samples for gas chromatography analysis: a review

open access: yesDrug Analytical Research
Valproic acid (VPA) is widely used as an important drug for the treatment of epilepsy, seizures, bipolar disorders, and migraines. However, its narrow therapeutic range lead to risks of unintentional poisoning and potential suicide.
Juliana Blume de Oliveira   +2 more
doaj   +1 more source

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