Results 181 to 190 of about 24,605 (215)
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Liquid–phase microextraction: A review of reviews

Microchemical Journal, 2019
Abstract Sample preparation is an important step in chemical analysis. It is generally done to deal with problems associated with the nature of the matrix, low analyte concentrations in real samples or analyte features incompatible with the instrumentation. Classical methods of extraction consume large volumes of hazardous solvents and other reagents
Muhammad Sajid   +2 more
exaly   +2 more sources

Recent advances in liquid-phase microextraction techniques for the analysis of environmental pollutants [PDF]

open access: yesTrAC - Trends in Analytical Chemistry, 2017
The liquid-phase microextraction (LPME) method is a sample pretreatment technique that uses small volumes of organic solvents to extract a wide variety of analytes from different matrices prior to instrumental analysis.
Mojtaba Shamsipur   +2 more
exaly   +1 more source

Liquid-phase microextraction preconcentration of impurities

Journal of Analytical Chemistry, 2011
The miniaturization of the preconcentration methods is one of the fields of contemporary analytical chemistry. A new method of liquid-liquid microextraction preconcentration has been developed for the last 10–15 years; it is highly efficient, rapid, simple in implementation, and ecologically safe. The methodology and principles of the implementation of
V. A. Krylov   +3 more
openaire   +1 more source

Pharmaceutical applications of liquid-phase microextraction

TrAC Trends in Analytical Chemistry, 2018
Abstract Despite the significant advances in analytical equipment, measuring drugs in biological fluids, metabolic studies and determining their therapeutic range and side effects requires a sample preparation step, which is due to the low concentration of the drug and/or the complexity of the sample matrix.
Shahram Seidi   +2 more
openaire   +1 more source

Nanoparticle-enhanced liquid-phase microextraction

TrAC Trends in Analytical Chemistry, 2015
Abstract Nanostructured materials play roles in different areas of analytical chemistry. Implementation of nanomaterials in liquid-phase microextraction results in a synergic combination yielding enhanced performance. Some significant examples include: carbon nanotubes for improving extraction efficiency; magnetic nanoparticles for retrieving ionic ...
Carlos Bendicho   +3 more
openaire   +1 more source

Dynamic headspace liquid-phase microextraction of alcohols

Journal of Chromatography A, 2005
A method was developed using dynamic headspace liquid-phase microextraction and gas chromatography-mass spectrometry for extraction and determination of 9 alcohols from water samples. Four different solvents, hexyl acetate, n-octanol, o-xylene and n-decane were studied as extractants.
openaire   +2 more sources

Hollow Fiber Liquid-Phase Microextraction

2012
This chapter discusses hollow fiber liquid-phase microextraction (LPME). The chapter comprises a short discussion of the basic setup and principles for LPME, and the historical development. The theory of LPME is also discussed including equations for extraction recoveries and extraction kinetics.
Gjelstad, A.   +2 more
openaire   +2 more sources

Development and evaluation of plunger-in-needle liquid-phase microextraction

Journal of Chromatography A, 2014
In this work, a novel, simple and fast one-step liquid-phase microextraction (LPME) approach, termed plunger-in-needle LPME was developed. In this method, the stainless steel plunger wire of a commercially available plunger-in-needle microsyringe was simply etched by immersion in hydrofluoric acid to form a microporous structure, and was used as the ...
Zhang, H., Ng, B.W.L., Lee, H.K.
openaire   +2 more sources

Application of liquid‐phase microextraction to the analysis of plant and herbal samples

Phytochemical Analysis, 2020
AbstractIntroductionThe analysis of plant and herbal samples is a challenging task for analytical chemists due to the complexity of the matrix combined with the low concentration of analytes. In recent years different liquid‐phase microextraction (LPME) techniques coupled with a variety of analytical equipment have been developed for the determination ...
Alina Diuzheva   +6 more
openaire   +3 more sources

Hydrodistillation–liquid-phase microextraction for infrared analysis of food

Analytical and Bioanalytical Chemistry, 2010
A combination of hydrodistillation (HD) and liquid-phase microextraction (LPME) has been successfully developed to improve sensitivity and selectivity in attenuated total reflection (ATR) infrared determination of semivolatile organic compounds from high water content plant and food matrices contributing to solve extraction efficiency drawbacks. The HD
Ana, Gonzálvez   +3 more
openaire   +2 more sources

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