Results 151 to 160 of about 30,102 (202)
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TrAC - Trends in Analytical Chemistry, 2010
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 miniaturization of the traditional liquid-liquid-extraction principle by greatly reducing the acceptor-to-donor ratio.
Ali Sarafraz-Yazdi, Amirhassan Amiri
exaly +2 more sources
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 miniaturization of the traditional liquid-liquid-extraction principle by greatly reducing the acceptor-to-donor ratio.
Ali Sarafraz-Yazdi, Amirhassan Amiri
exaly +2 more sources
In-vessel headspace liquid-phase microextraction
Analytica Chimica Acta, 2021A new mode of headspace liquid-phase microextraction termed in-vessel headspace liquid-phase microextraction (IV-HS-LPME) has been developed. A plastic vessel was used as a holder for an extraction phase. Problems with drop stability, limitations in the stirring speed, and too little volume of the acceptor phase have been completely eliminated.
Aimad-Eddine Tamen, Andriy Vishnikin
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Metal applications of liquid-phase microextraction [PDF]
TrAC - 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 Angel Aguirre +2 more
exaly +3 more sources
Ferrofluid-based liquid-phase microextraction
Journal of Chromatography A, 2010A new mode of liquid-phase microextraction based on a ferrofluid has been developed. The ferrofluid was composed of silica-coated magnetic particles and 1-octanol as the extractant solvent. The 1-octanol was firmly confined within the silica-coated particles, preventing it from being lost during extraction.
Shi, Z.-G., Zhang, Y., Lee, H.K.
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Chemical reactions in liquid-phase microextraction
Journal of Chromatography A, 2009In recent years, liquid-phase microextraction (LPME), a microscale implementation of liquid-liquid extraction, has become a very popular sample pretreatment technique because it combines extraction and enrichment, and is inexpensive, easy to operate and nearly solvent-free.
Li, Xu +2 more
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Gas flow headspace liquid phase microextraction
Journal of Chromatography A, 2009There is a trend towards the use of enrichment techniques such as microextraction in the analysis of trace chemicals. Based on the theory of ideal gases, theory of gas chromatography and the original headspace liquid phase microextraction (HS-LPME) technique, a simple gas flow headspace liquid phase microextraction (GF-HS-LPME) technique has been ...
Cui, Yang +6 more
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Reduction of extraction times in liquid-phase microextraction
Journal of Chromatography B: Biomedical Sciences and Applications, 2001Recently, we introduced a simple and inexpensive disposable device for liquid-phase microextraction (LPME) based on porous polypropylene hollow fibres. In the present paper, extraction times were significantly reduced by an increase in the surface of the hollow fibres.
Grønhaug Halvorsen, Trine +2 more
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The Role of Liquid-Phase Microextraction Techniques in Bioanalysis
Bioanalysis, 2015Sample preparation is one of the most challenging tasks in laboratories, particularly in what concerns biological specimens, since they cannot be directly analyzed. A considerable amount of time and effort is spent in the extraction of the analytes and their concentration in a solvent that is compatible with analytical instrumentation.
Mário, Barroso +2 more
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Solid drop based liquid-phase microextraction
Journal of Chromatography A, 2010Solid drop based liquid-phase microextraction (SDLPME) is a novel sample preparation technique possessing obvious advantages of simple operation with a high pre-concentration factor, low cost and low consumption of organic solvent. SDLPME coupled with gas chromatography (GC), high-performance liquid chromatography (HPLC), and atomic absorption ...
Mohammad Reza, Ganjali +5 more
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