Analytical applications of membrane extraction in chromatography and electrophoresis

Cordero, Bernardo Moreno; Pavón, José Luis Pérez; Pinto, Carmelo Garcı́a; Laespada, María Esther Fernández; Martínez, R. Carabias; Rodríguez‐Gonzalo, Encarnación

doi:10.1016/s0021-9673(00)00835-9

Cited by 59 publications

(9 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In facilitated and active diffusion, a carrier is placed in the membrane to increase the membrane permeability and therefore facilitate the diffusion of the analyte. Nevertheless, in facilitated diffusion, the analyte diffuses from high to low concentration gradients while, in active diffusion, the analyte diffuses against the gradient through a reaction that occurs inside the membrane (22).…”

Section: Membrane-based Separationsmentioning

confidence: 99%

Membrane-based Separation in Flow Analysis for Environmental and Food Applications

Santos

Mesquita

Rangel

2018

Separation & Purification Reviews

View full text Add to dashboard Cite

Membrane-based separation techniques have been used as an efficient process for analyte separation or enrichment and matrix removal. By coupling these techniques to flow-based analysis, sample preparation and analyte detection can be automated and miniaturized. Different membrane separation techniques are available but the most used in flow analysis are gas diffusion, dialysis, supported liquid membranes and polymer inclusion membranes. The current state of the art of membrane-based separations hyphenated with flow techniques is presented along with a discussion of the applications to environmental and food analysis. Moreover, a brief description of gas diffusion, dialysis and membrane extraction techniques is also included.

show abstract

Section: Membrane-based Separationsmentioning

confidence: 99%

Membrane-based Separation in Flow Analysis for Environmental and Food Applications

Santos

Mesquita

Rangel

2018

Separation & Purification Reviews

View full text Add to dashboard Cite

show abstract

“…The application of CE, especially for the trace analysis, is usually restricted due to the relatively low concentration sensitivity because of the small sampling volume and short optical path length of detection window. Therefore, several methods, including sweeping 77, field‐amplified sample stacking 78, 79, transient isotachophoresis 80, 81, dynamic pH junction 82, 83, SPE 84, 85, membrane extraction 86, and supercritical fluid extraction 87, have been used to enhance the sensitivity of CE. SPE is one of the most intensively used pre‐concentration methods in many fields 88–90, where a high extraction recovery of many compounds can usually be obtained if the sorbent and operating procedure are suitable.…”

Section: Sample Preparationmentioning

confidence: 99%

CE and CEC of nucleosides and nucleotides in food materials

et al. 2010

View full text Add to dashboard Cite

Dietary nucleosides and nucleotides play an important role in the maintenance of functions of bone marrow hematopoietic cells, intestinal mucosa, and brain. Therefore, analysis of those compounds in food is very important for improving and assuring food quality. This review summarized the application of CE and CEC in the analysis of nucleosides and nucleotides in food. The sample preparation and detection are also discussed.

show abstract

“…In addition, Varesio and Veuthey [145] reported a high number of interfering compounds when ultrafiltration was used for the enantioselective analysis of amphetamine and analogs in urine. Nonporous membrane-based extraction techniques are efficient alternatives to classical sample preparation procedures [146][147][148][149]. They are characterized by a high degree of selectivity and enrichment power, being particularly attractive for bioanalysis purposes.…”

Section: Sample Preparationmentioning

confidence: 99%

Recent advances in the determination of enantiomeric drugs and their metabolites in biological fluids by capillary electrophoresis‐mediated microanalysis

Bonato

2003

Electrophoresis

View full text Add to dashboard Cite

This review summarizes the recent developments in the application of electromigration techniques for the enantioselective analysis of drugs and metabolites in biological fluids. During the period covered by this review, it has been observed an increase in the use of negatively charged chiral selectors, particularly sulfobutyl ether-beta-cyclodextrin and sulfated-beta-cyclodextrin, and the combination of two different chiral selectors in the running buffer to obtain the resolution of drugs and their metabolites. Low detection limits as required for pharmacokinetic studies were obtained by using concentration techniques, including sample stacking procedures, and more sensitive detection systems, such as laser-induced fluorescence and mass spectrometry. Finally, the major points are discussed that can be considered to obtain reliable methods for enantioselective bioanalysis.

show abstract

Analytical applications of membrane extraction in chromatography and electrophoresis

Cited by 59 publications

References 87 publications

Membrane-based Separation in Flow Analysis for Environmental and Food Applications

Membrane-based Separation in Flow Analysis for Environmental and Food Applications

CE and CEC of nucleosides and nucleotides in food materials

Recent advances in the determination of enantiomeric drugs and their metabolites in biological fluids by capillary electrophoresis‐mediated microanalysis

Contact Info

Product

Resources

About