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Micellar electrokinetic chromatography

Separation of a group of N phenylpyrazole derivatives by micellar electrokinetic chromatography: application to the determination of solute micelle association constants and estimation of the hydrophobicity

Separation of a group of N phenylpyrazole derivatives by micellar electrokinetic chromatography: application to the determination of solute micelle association constants and estimation of the hydrophobicity

... Micellar electrokinetic chromatography (MEKC) was applied to the separation of a group of N-phenylpyrazole ...as micellar sys- tem and 2-(N-cyclohexylamino)ethanesulfonic acid (CHES) as ...

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Retention modeling and resolution optimization for a group of N phenylpyrazole derivatives in micellar electrokinetic chromatography using empirical and physicochemical models

Retention modeling and resolution optimization for a group of N phenylpyrazole derivatives in micellar electrokinetic chromatography using empirical and physicochemical models

... by micellar electrokinetic chromatography (MEKC) is a complex task due to the great number of variables affecting the pro- cess: pH, type and concentration of buffer, surfactant, and organic ...

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A sensitive micellar electrokinetic chromatography laser induced fluorescence method to analyze chiral amino acids in orange juices / Carolina Simó, Coral Barbas and Alejandro Cifuentes

A sensitive micellar electrokinetic chromatography laser induced fluorescence method to analyze chiral amino acids in orange juices / Carolina Simó, Coral Barbas and Alejandro Cifuentes

... and micellar electrokinetic chromatography with laser-induced fluorescence (MEKC - LIF) to separate and detect L - and D -amino acids ( L -aa and D -aa) previously derivatized with fluorescein ...

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Analysis of antioxidants from orange juice using countercurrent supercritical fluid extration, micellar electrokinetic chromatography and reverse phase HPLC / C  Barbas    [et al ]

Analysis of antioxidants from orange juice using countercurrent supercritical fluid extration, micellar electrokinetic chromatography and reverse phase HPLC / C Barbas [et al ]

... Antioxidants from orange juice were determined by the combined use of countercurrent supercritical fluid extraction (CC-SFE) prior to reverse-phase liquic chromatography (RP-LC) or micellar electro- kinetic ...

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Development and validation of a method to determine amoxicillin in physiological fluids using micellar liquid chromatography

Development and validation of a method to determine amoxicillin in physiological fluids using micellar liquid chromatography

... accessibility. HPLC methods were developed for more specific assays. Early HPLC methods involved pretreatment with imidazole [6], precolumn [7], and postcolumn derivatization [8]. Later HPLC methods using reversed-phase ...

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TítuloPurification and characterization of phycocyanin from the marine cyanobacterium Synechococcus sp  IO9201

TítuloPurification and characterization of phycocyanin from the marine cyanobacterium Synechococcus sp IO9201

... Fig. 4 shows the chromatogram obtained from ion exchange chromatography on Q-sepharose recording the absorbance at 280 and 620 nm. Only one peak was obtained, both at 280 and 620 nm, corresponding to phycocyanin. ...

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Influence of chemical reaction kinetics on electrokinetic remediation modelling results

Influence of chemical reaction kinetics on electrokinetic remediation modelling results

... A numerical model describing transport of multiple species and chemical reactions during electrokinetic treatment is presented. The transport mechanisms included in the model were electromigration and ...

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16667906

16667906

... and electrokinetic parameters such as salt and ionic permeabilities, zeta potential and surface charge ...the electrokinetic pa- rameters as a result of the membrane use were obtained and, according to XPS ...

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Modeling of Electrokinetic Remediation Combining Local Chemical Equilibrium and Chemical Reaction Kinetics

Modeling of Electrokinetic Remediation Combining Local Chemical Equilibrium and Chemical Reaction Kinetics

... simulating electrokinetic remediation processes, but also in modelling reactive-transport in porous media in general way, with and without the existence of an external electric field, as in geochemical process, ...

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Fast enantiomeric separation of uniconazole and diniconazole by electrokinetic chromatography using an anionic cyclodextrin: application to the determination of analyte selector apparent binding constants for enantiomers

Fast enantiomeric separation of uniconazole and diniconazole by electrokinetic chromatography using an anionic cyclodextrin: application to the determination of analyte selector apparent binding constants for enantiomers

... The enantiomeric resolution of the fungicides uniconazole and diniconazole was per- formed using electrokinetic chromatography with cyclodextrins as pseudostationary phase (CD-EKC). Asystematic evaluation ...

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Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae)

Partial Characterization of Venom from the Colombian Spider Phoneutria Boliviensis (Aranae:Ctenidae)

... This is the first report of partial characterization of venom from the Ctenidae spider P. boliviensis. There is a growing interest in venom from different arachnids since they represent a wide pharmacological library of ...

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Desarrollo e implementación de una metodología para la detección de pesticidas organoclorados mediante cromatografía de gases acoplada a espectometría de masas

Desarrollo e implementación de una metodología para la detección de pesticidas organoclorados mediante cromatografía de gases acoplada a espectometría de masas

... Gas chromatography combined with electron capture detector has become a routine technique for organochlorine pesticide ...gas chromatography coupled with mass ...

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Separation and online preconcentration by multistep stacking with large volume injection of anabolic steroids by capillary electrokinetic chromatography using charged cyclodextrins and UV absorption detection

Separation and online preconcentration by multistep stacking with large volume injection of anabolic steroids by capillary electrokinetic chromatography using charged cyclodextrins and UV absorption detection

... 3.2 Online preconcentration by single stacking Since the selected separation buffer contained anionic CDs with reverse migration in the normal polarity mode, the following steps were con[r] ...

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GAS CHROMATOGRAPHY AND LIPIDS

GAS CHROMATOGRAPHY AND LIPIDS

... Hydrazone derivatives of aldehydes can be converted directly to acetals by heating them with the required alcohol and an acid catalyst in the presence of acetone, which serves as an exchanger [580]. All acetal ...

191

Analytical study on ethephon residue determination in water by ion pairing liquid chromatography/tandem mass spectrometry

Analytical study on ethephon residue determination in water by ion pairing liquid chromatography/tandem mass spectrometry

... Analytical study on ethephon residue determination in water by ion-pairing liquid.. chromatography/tandem mass spectrometry.[r] ...

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Minerales en la Leche.pdf

Minerales en la Leche.pdf

... Consequently, micellar calcium phosphate and the small amounts of magnesium and citrate associated to casein micelles are dissolved and the caseins are liberated into the diffusible frac- tion of ...the ...

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Ordered mesoporous silica functionalized with ß-cyclodextrin derivative for optical isomer separation of flavanones and flavanone glycosides by nano-liquid chromatography and capillary electrochromatography

Ordered mesoporous silica functionalized with ß-cyclodextrin derivative for optical isomer separation of flavanones and flavanone glycosides by nano-liquid chromatography and capillary electrochromatography

... Silica-based materials are very appealing for analytical applications because they are relatively inexpensive, thermally stable, chemically inert and biocompatible. The discovery of ordered mesoporous silicas (OMSs) in ...

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16611433

16611433

... plotted both the G E and G ideal M versus the micellar com- position, expressed as the ionic component content. These plots show that both magnitudes are symmetrical functions with respect to the micellar ...

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Micellar liquid chromatographic method for the simultaneous determination of norfloxacin and tinidazole in pharmaceutical dosage forms and human plasma

Micellar liquid chromatographic method for the simultaneous determination of norfloxacin and tinidazole in pharmaceutical dosage forms and human plasma

... A micellar liquid chromatographic method was developed for the simultaneous analysis of a binary mixture of norfloxacin and tinidazole (NOR and TIN) in dosage forms and human ...

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