Effects of addition of ion-pair reagent to the mobile phase on electroosmotic flow velocity in pressurized planar electrochromatography

A Hałka-Grysińska, P Płocharz, E Skwarek… - JPC-Journal of Planar …, 2015 - akjournals.com
In the paper, the influence of the addition of different ion-pair reagents—sodium-1-heptane
sulfonate (HS), tetrabutylammonium chloride (TBA), and bis (2-ethylhexyl) hydrogen …

Design of experiments for micellar electrokinetic chromatography method development for the monitoring of water‐soluble vitamins in cell culture medium

D van der Burg, H Wätzig… - …, 2023 - Wiley Online Library
Biopharmaceutical production takes place in complex processes which should be
thoroughly understood. Therefore, the iConsensus project focuses on developing a …

On-line concentration methods for analysis of fat-soluble vitamins by MEKC

Q Liu, L Jia, C Hu - Chromatographia, 2010 - Springer
A micellar electrokinetic chromatography method was developed for the simultaneous
determination of three fat-soluble vitamins with UV detection. Several factors, such as the …

Preliminary results for interval feeding the orthogonal pressurized planar electrochromatography system with sample solution for its preparative separation

R Gajos, A Chomicki, B Polak, TH Dzido - Journal of Chromatography A, 2017 - Elsevier
The orthogonal pressurized planar electrochromatography (OPPEC) is an example of 2-D
separation technique, in which two simultaneous and orthogonal processes of …

Separation of amino acid 2,4-dinitrophenyl-5- l -valine amide diastereomeric derivatives with high-performance planar chromatography and pressurized …

B Polak, K Balasa, T Dzido - JPC-Journal of Planar Chromatography …, 2013 - akjournals.com
Separation of 2, 4-dinitrophenyl-5-l-valine amide derivatives of some amino acids (leucine,
isoleucine, valine, asparagine, cysteine, tryptophane) L and D-enantiomers with high …

Separation of neutral compounds by high speed capillary electrochromatography

L Zhang, W Shi, H Zou, J Ni, Y Zhang - Journal of liquid …, 1999 - Taylor & Francis
With using short capillary column packed with porous and non-porous ODS stationary
phases, high speed separation of 6 neutral aromatic compounds within 36 s by capillary …

Sweeping of hydrophobic amines under inhomogeneous electric field and low surfactant concentration in micellar electrokinetic chromatography

K Ciura, P Kowalski, J Nowakowska… - …, 2016 - Wiley Online Library
The influence of sample matrix on sample sweeping in MEKC was examined in the
presented manuscript. Significant focusing effect was observed for relatively hydrophobic …

Optimization of the separation of ionizable compounds in micellar electrokinetic chromatography by simultaneous change of pH and SDS concentration

A Téllez, E Fuguet, M Rosés - Electrophoresis, 2007 - Wiley Online Library
A method to optimize the separation in micellar EKC (MEKC) of mixtures of acidic
compounds as a function of two parameters, pH and concentration of sodium dodecyl …

Cationic double-chained surfactant as pseudostationary phase in micellar electrokinetic capillary chromatography for drug separations

Y Li, Q Liu, S Yao - Talanta, 2008 - Elsevier
The cationic double-chained surfactant didodecyldimethylammonium bromide (DDAB) was
used as pseudostationary phase (PSP) in micellar electrokinetic capillary chromatography …

Carboxyl modified magnetic nanoparticles coated open tubular column for capillary electrochromatographic separation of biomolecules

W Wang, X Xiao, J Chen, L Jia - Journal of Chromatography A, 2015 - Elsevier
Carboxyl modified magnetic nanoparticles (Fe 3 O 4-COOH MNPs) coated open tubular
(OT) columns were prepared for capillary electrochromatography. The Fe 3 O 4-COOH …