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Dispersive-Micro-Solid Phase Extraction

Dispersive extraction techniques are valuable for their ability to maximize the interaction between the sample and the extractant, leading to increased extraction efficiency. Dispersive solid phase extraction (dSPE) was initially developed to enhance the selectivity of the analytical process by using a solid phase to retain potential interferents from ...
D'Orazio Giovanni
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Solid-phase extraction of carotenoids

Journal of Chromatography A, 2009
In this work, solid-phase extraction (SPE) trapping performance of lutein and beta-carotene, which were used as the model molecules of carotenoids, was investigated. The absorption, elution, and enrichment of carotenoids on SPE cartridges with four different sorbents, i.e.
Yao, Shen, Yumin, Hu, Ke, Huang, Shi'an, Yin, Bo, Chen, Shouzhuo, Yao   +5 more
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Automated Solid Phase Extraction

2011
An overview is given in this chapter of the main potential benefits of using automated Solid phase Extraction (SPE) in the preparation of food samples for LC-MS analysis, both in terms of quality of results and in terms of performance and productivity. Automated SPE instrumentation is described and a range of application examples are given.
Norbert, Helle, Meike, Baden, Kaj, Petersen   +2 more
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Solid-phase extraction in clinical biochemistry

Annals of Clinical Biochemistry: International Journal of Laboratory Medicine, 2002
In order to measure low concentrations of analytes in plasma and urine, it is often necessary to extract and concentrate them. With solid-phase extraction (SPE), this is achieved by partitioning the analytes between a solid and a liquid or headspace vapour.
Walker, Valerie, Mills, Graham A.
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Solid-phase extraction of acidic herbicides

Journal of Chromatography A, 2000
A discussion of solid-phase extraction method development for acidic herbicides is presented that reviews sample matrix modification, extraction sorbent selection, derivatization procedures for gas chromatographic analysis, and clean-up procedures for high-performance liquid chromatographic analysis.
M J, Wells, L Z, Yu
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Solid-Phase Extraction

2000
Introduction to Solid-Phase Extraction, N.J.K. Simpson and M.J.M. Wells SPE Sorbents and Formats, J.J. Pesek and M.T. Matyska The Sample Matrix and Its Influence on Method Development, N.J. K. Simpson and P.M. Wynne Handling Large Volume Samples: Applications of SPE to Environmental Matrices, M.J.M.
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Solid-Phase Extraction in Segmented Flow

Langmuir, 2014
Two-phase flow systems are increasingly popular for miniaturized, high-throughput performance of analytical or chemical reactions. In this contribution, we extend a previously described method that allows to increase the range of applications of heterogeneous reactions in two-phase flow, i.e., reactions that rely on isolation and purification of the ...
Rendl, Martin, Brandstetter, Thomas, Rühe, Jürgen   +2 more
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Solid-phase extraction of soy isoflavones

Journal of Chromatography A, 2005
An automated method using solid-phase extraction (SPE) for the concentration and clean-up of soy isoflavone extracts is proposed in this work. Using a standardized sample (0.1 g of a freeze dried soybean extract/25 mL of water); eight SPE cartridges with a wide range of sorbents (C18, divinylbenzene and modified divinylbenzene) from different suppliers
Mauricio A, Rostagno, Miguel, Palma, Carmelo G, Barroso   +2 more
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MOLECULAR IMPRINTS FOR SOLID-PHASE EXTRACTION

2000
Among the most important fields in analytical chemistry are medical, food and environmental analysis, where the target analytes are often present at very low concentrations in rather complex matrices. Methods currently used for analysis, such as liquid chromatography, gas, chromatography or capillary electrophoresis, must therefore be proceeded by a ...
Cormack, Peter, Haupt, Karsten
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Carbon nanotubes: Solid-phase extraction

Journal of Chromatography A, 2010
Since the first report in 1991, carbon nanotubes (CNTs) have shown great possibilities for a wide variety of processes and applications, which include their use as electrodes, sensors (gas, enzymatic, etc.), nanoprobes, electronic materials, field emitters, etc. The combination of structures, dimensions and topologies has provided physical and chemical
Lidia M, Ravelo-Pérez, Antonio V, Herrera-Herrera, Javier, Hernández-Borges, Miguel Angel, Rodríguez-Delgado   +3 more
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