Influence of some operation variables on continuous separation process of orthogonal pressurized planar electrochromatography

R Gajos, E Łopaciuk, TH Dzido - Journal of Chromatography A, 2015 - Elsevier
Orthogonal pressurized planar electrochromatography (OPPEC) is the new separation
technique, in which two simultaneous and orthogonal processes of electrochromatography …

Separation of water-soluble vitamins by reversed-phase high performance liquid chromatography with ultra-violet detection: application to polyvitaminated premixes

O Heudi, T Kilinç, P Fontannaz - Journal of Chromatography A, 2005 - Elsevier
Nine water-soluble vitamins:[thiamine (B1), ascorbic acid (C), nicotinamide (PP), pyridoxine
(B6), calcium pantothenate (B5), folic acid (B9), cyanocobalamin (B12), riboflavin (B2) and …

Capillary electrophoretic separation of vitamins in sodium dodecyl sulfate containing buffers with lower aliphatic alcohols and n-hexane as organic modifiers

MS Bellini, G Manetto, Z Deyl, F Tagliaro… - … of Chromatography B …, 2000 - Elsevier
The effect of lower organic alcohols as co-surfactants (methanol, ethanol, n-propanol,
isopropanol, propanediol, n-butanol and isoamylalcohol) and n-hexane as an organic …

Separation of phenolic acids and flavone natural antioxidants by two‐dimensional method combining liquid chromatography and micellar electrokinetic capillary …

P Česla, J Fischer, P Jandera - Electrophoresis, 2010 - Wiley Online Library
A 2‐D method was developed for separation of phenolic acids and flavone compounds
combining LC with MEKC. The effect of substituted neutral and anionic CD additives to the …

Study of retention mechanism of a mixed-mode stationary phase and its application for the simultaneous determination of ten water-and fat-soluble vitamins by HPLC …

XT Peng, Z Li, Y Zhang, T Liu, QW Yu, YQ Feng - Chromatographia, 2013 - Springer
A novel mixed-mode stationary phase (OAS) has been prepared by bonding n-octyl and
aminopropyl groups with the surface of silica gel. The obtained OAS stationary phase was …

Analysis of vitamin formulations by electrokinetic chromatography utilizing tetradecylammonium ions as the pseudostationary phase

Ø Næss, T Tilander, S Pedersen‐Bjergaard… - …, 1998 - Wiley Online Library
A recently proposed method for the separation of fat‐soluble vitamins by electrokinetic
chromatography was further developed and investigated in the present study. The …

Rapid determination of water-and fat-soluble vitamins with microemulsion electrokinetic chromatography

C Yin, Y Cao, S Ding, Y Wang - Journal of Chromatography A, 2008 - Elsevier
A rapid, reliable and reproducible method based on microemulsion electrokinetic
chromatography (MEEKC) for simultaneous determination of 13 kinds of water-and fat …

β-Cyclodextrin as the mobile phase component for separation of some DNS-amino acid enantiomers with HPTLC and PPEC

B Polak, P Garbacz - Current Analytical Chemistry, 2015 - ingentaconnect.com
Separation of 5-(dimethylamino) naphthalene-1-sulphonyl (DNS-) derivatives of some
amino acids (alanine, leucine, valine, phenylalanine) D-and L-enantiomers with high …

Hexafluoroisopropanol-modified cetyltrimethylammonium bromide/sodium dodecyl sulfate vesicles as a pseudostationary phase in electrokinetic chromatography

Y Tian, Y Li, J Mei, B Deng, Y Xiao - Journal of Chromatography A, 2015 - Elsevier
A novel catanionic surfactant vesicle system, formulated from hexafluoroisopropanol (HFIP),
cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulfate (SDS), was developed …

Optimization of fat soluble vitamin separation in reversed-phase microcolumn liquid chromatography

WT Wahyuni, K Jinno - Chromatographia, 1987 - Springer
Separation behavior of fat soluble vitamins on various chemically bonded materials in non-
aqueous reversedphases microcolumn liquid chromatography has been investigated. The …