Recent Advances in Extraction and Stirring Integrated Techniques

Cárdenas, Soledad; Lucena, Rafael

doi:10.3390/separations4010006

Cited by 45 publications

(9 citation statements)

References 66 publications

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“…Monolithic solids containing magnetic nanoparticles (MNPs) can be used as stir bars without the need of prepared them over any support [ 53 , 54 ]. The continuous and porous structure of the monoliths, together with the magnetic response of the MNPs, offers the possibility of obtaining hybrid and robust macroscopic bars able to rotate in the sample solution in the presence of an external magnetic force.…”

Section: Analytical Applications Of Mims With Nanoparticlesmentioning

confidence: 99%

Molecularly Imprinted Polymer Micro- and Nano-Particles: A Review

2020

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In recent years, molecularly imprinted polymers (MIPs) have become an excellent solution to the selective and sensitive determination of target molecules in complex matrices where other similar and relative structural compounds could coexist. Although MIPs show the inherent properties of the polymers, including stability, robustness, and easy/cheap synthesis, some of their characteristics can be enhanced, or new functionalities can be obtained when nanoparticles are incorporated in their polymeric structure. The great variety of nanoparticles available significantly increase the possibility of finding the adequate design of nanostructured MIP for each analytical problem. Moreover, different structures (i.e., monolithic solids or MIPs micro/nanoparticles) can be produced depending on the used synthesis approach. This review aims to summarize and describe the most recent and innovative strategies since 2015, based on the combination of MIPs with nanoparticles. The role of the nanoparticles in the polymerization, as well as in the imprinting and adsorption efficiency, is also discussed through the review.

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Section: Analytical Applications Of Mims With Nanoparticlesmentioning

confidence: 99%

Molecularly Imprinted Polymer Micro- and Nano-Particles: A Review

2020

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“…However, the current trend is to employ this technique in combination with many novel materials, including restricted access materials, carbon adsorbents, molecularly imprinted polymers, ionic liquids, microporous monoliths, sol-gel prepared coatings, and dual-phase materials [24]. The main advances in various "extraction/stirring integrated techniques", including the source SBSE technique, emphasizing their analytical potential, were also previously reviewed and compared [25].…”

Section: Stir Bar Sorption Extractionmentioning

confidence: 99%

Modern Approaches to Preparation of Body Fluids for Determination of Bioactive Compounds

Madej

Piekoszewski

2019

Separations

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The current clinical and forensic toxicological analysis of body fluids requires a modern approach to sample preparation characterized by high selectivity and enrichment capability, suitability for micro-samples, simplicity and speed, and the possibility of automation and miniaturization, as well as the use of small amounts of reagents, especially toxic solvents. Most of the abovementioned features may be realized using so-called microextraction techniques which cover liquid-phase techniques (e.g., single-drop microextraction, SDME; dispersive liquid–liquid microextraction, DLLME; hollow-fiber liquid-phase microextraction, HF-LPME) and solid-phase extraction techniques (solid-phase microextraction, SPME; microextraction in packed syringes, MEPS; disposable pipette tip extraction, DPX; stir bar sorption extraction, SBSE). Some other extraction methodologies like dispersive solid-phase extraction (d-SPE) or magnetic solid-phase extraction (MSPE) can also be easily miniaturized. This review briefly describes and characterizes the abovementioned extraction methods, and then presents their current applications to the preparation of body fluids analyzed for bioactive compounds in combination with appropriate analytical methods, mainly chromatographic and related techniques. The perspectives of the analytical area we are interested in are also indicated.

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“…GERSTEL sells this device under the name Twister® or Twicester® for multi‐stir bar sorptive extraction . The shape of the stirrer can have one of two forms – stir membrane or stir disk .…”

Section: Sorbent‐based Microextractionmentioning

confidence: 99%

Critical evaluation of microextraction pretreatment techniques – Part 1: Single drop and sorbent‐based techniques

Havlíková

Čabala

Pacáková

et al. 2018

J of Separation Science

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Sample pretreatment techniques or preconcentration constitute a very important step before the analysis of environmental, clinical, pharmaceutical, and other complex samples. Thanks to extraction techniques it is possible to achieve higher method sensitivities and selectivities. Miniaturization microextraction methods make them more environmentally friendly and only small amounts of samples are required. In the past 30 years, a number of microextraction methods have been developed and used and are documented in thousands of articles. Many reviews have been written focusing on their use in specified professional fields or on the latest trends. Unfortunately, no uniform nomenclature has been introduced for these methods. Therefore, this review attempts to classify all the essential microextraction techniques and describes their advantages, disadvantages, and the latest innovations. The methods are divided into two main groups: single drop and sorbent‐based techniques according to the type of extraction phase.

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Recent Advances in Extraction and Stirring Integrated Techniques

Cited by 45 publications

References 66 publications

Molecularly Imprinted Polymer Micro- and Nano-Particles: A Review

Molecularly Imprinted Polymer Micro- and Nano-Particles: A Review

Modern Approaches to Preparation of Body Fluids for Determination of Bioactive Compounds

Critical evaluation of microextraction pretreatment techniques – Part 1: Single drop and sorbent‐based techniques

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