Results 1 to 10 of about 32,403 (148)

A Neglected Issue: Stationary Phase Retention Determination of Classic High-Speed Counter-Current Chromatography Solvent Systems

open access: yesSeparations, 2022
Obtaining an ideal solvent system for target compounds is still an obstacle to the wide application of high-speed counter-current chromatography (HSCCC).
Sha Li   +5 more
doaj   +1 more source

Analysis by LC-MS/MS of polar pesticides in fruits and vegetables using new hybrid stationary phase

open access: yesMethodsX, 2021
Highly polar pesticides are frequently used in agriculture. However, their physicochemical properties make very difficult the analysis of these compounds following common procedures.
Víctor Cutillas   +1 more
doaj   +1 more source

A New Definition of the Stationary Phase Volume in Mixed-Mode Chromatographic Columns in Hydrophilic Liquid Chromatography

open access: yesMolecules, 2021
Polar columns used in the HILIC (Hydrophilic Interaction Liquid Chromatography) systems take up water from the mixed aqueous–organic mobile phases in excess of the water concentration in the bulk mobile phase.
Pavel Jandera, Tomáš Hájek
doaj   +1 more source

Normal-phase high performance liquid chromatography of estradiol derivatives on amino- and diol-columns [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The retention behavior of estradiol derivatives was studied by HPLC on chemically bonded polar stationary phases: commercially available amino and diol- columns, as a function of the heptane-propan-1-ol as the mobile phase, when the volume fraction of ...
Ačanski Marijana M.
doaj   +3 more sources

Automated Image Analysis for Retention Determination in Centrifugal Partition Chromatography

open access: yesSeparations, 2022
In Centrifugal Partition Chromatography, two immiscible liquids are used as mobile and stationary phases. During operation, bleeding of the stationary phase cannot be eliminated completely.
Felix Buthmann   +3 more
doaj   +1 more source

Efficiency of a solvatic sorption model for the prediction of retention times in linear gradient reversed-phase liquid chromatography working with different stationary phases; pp. 37–49 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2016
Currently several different approaches are used for speed-up and cost reduction for new method development in reversed-phase high-performance liquid chromatography.
Svetlana Vorslova   +3 more
doaj   +1 more source

Evaluating Relative Retention of Polar Stationary Phases in Hydrophilic Interaction Chromatography

open access: yesSeparations, 2019
A large number of polar stationary phases with diverse chemistry have been developed for various applications in hydrophilic interaction chromatography (HILIC).
Yong Guo, Nidhi Bhalodia, Bassel Fattal
doaj   +1 more source

Comparison of Retention Behavior between Supercritical Fluid Chromatography and Normal-Phase High-Performance Liquid Chromatography with Various Stationary Phases

open access: yesMolecules, 2019
The retention behavior of a wide variety of stationary phases was compared in supercritical fluid chromatography (SFC) and normal-phase high-performance liquid chromatography (NP-HPLC).
Tsunehisa Hirose   +3 more
doaj   +1 more source

Separation of Inorganic Anions and Phenolic Compounds Using Tetraethylene Oxide-Bonded Stationary Phases in Capillary Liquid Chromatography

open access: yesIndonesian Journal of Chemistry, 2019
Tetraethylene glycol monomethyl ether (TEGMM) and tetraethylene glycol (TEG) modified silica were synthesized and used in capillary liquid chromatography as stationary phases.
Roza Linda   +3 more
doaj   +1 more source

Electrochromatographic retention of peptides on strong cation‐exchange stationary phases [PDF]

open access: yesELECTROPHORESIS, 2010
AbstractWe analyze the systematic and substantial electrical field‐dependence of electrochromatographic retention for four counterionic peptides ([Met5]enkephalin, oxytocin, [Arg8]vasopressin, and luteinizing hormone releasing hormone (LHRH) ) on a strong cation‐exchange (SCX) stationary phase.
Ivo, Nischang   +2 more
openaire   +2 more sources

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