Results 251 to 260 of about 277,049 (293)

Polypyrrole as Adsorbent in Magnetic Solid Phase Extraction for Progesterone Determination from Human Plasma. [PDF]

ACS Omega
Carvalho IA, Silva CF, da Cunha R, Borges KB.   +3 more
europepmc   +1 more source

Next-Generation Wastewater-Based Epidemiology: Green Automation for Detecting 69 Multiclass Pharmaceutical and Personal Care Products in Wastewater Using 96-Well Plate Solid-Phase Extraction by LC-MS/MS. [PDF]

Molecules
Karubothula B, Kota VV, Shinde D, Tadala R, Cheerala V, Salem SB, Elamin WF, Brudecki G.   +7 more
europepmc   +1 more source

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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
openaire   +2 more sources

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
openaire   +2 more sources

Solid-phase extraction of phenols

Journal of Chromatography A, 2000
Sample preparation for phenol analysis using solid-phase extraction (SPE) is reviewed. The scope of the review has been restricted to the literature dealing with the analysis of phenols as the main objective. The use, advantages and disadvantages of silica sorbents, polymeric, functionalized, carbon-based and mixed available sorbents, when applied to ...
I, Rodríguez, M P, Llompart, R, Cela
openaire   +2 more sources

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
openaire   +2 more sources

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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Immuno-affinity solid-phase extraction

Journal of Chromatography B: Biomedical Sciences and Applications, 2000
The measurement of trace organics such as drugs and pesticides at low concentration in biological and environmental samples is a challenging analytical task. Despite recent advances in instrumentation most analysts regard sample preparation as the rate-limiting step in the overall analytical method.
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Ion-pair solid-phase extraction

Journal of Chromatography A, 2000
Solid-phase extraction (SPE) is a technique widely employed by analytical chemists. SPE cartridges are available in a wide variety of formats containing media with diverse chemistries. This paper will review ion-pair SPE, one of the less frequently applied, and presumably less well-known techniques.
openaire   +2 more sources

Magnetic solid-phase extraction

Journal of Magnetism and Magnetic Materials, 1999
Magnetic solid-phase extraction is a new procedure for the preconcentration of target analytes from large volumes based on the use of magnetic or magnetizable adsorbents. In the experiments reactive copper phthalocyanine dye attached to silanized magnetite, and magnetic charcoal were used as adsorbents and selected organic dyes were used as analytes ...
Mirka Šafařı́ková, Ivo Šafařı́k
openaire   +1 more source