Results 51 to 60 of about 5,042,699 (188)
, 2012 A silica based amino stationary phase was prepared by immobilization of propargylamine on azide-silica via click chemistry. This readily prepared click amino stationary phase demonstrated good selectivity in separation of common inorganic anions under ...
Du, Qing +7 more
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Studying the chromatographic separation of caffeine, theophylline, and theobromine
Iraqi Journal of Chemical and Petroleum EngineeringTheobromine, theophylline, and caffeine retention times in a C18 HPLC column (stationary phase) were investigated as a function of mobile phase flow rate, mobile phase composition, and column temperature.
Hassanain A. Hassan +2 more
doaj +1 more source
, 1988 The characterization of stationary/mobile phase combinations can be done in a phenomenological way by measuring the k′ values of specific solutes, the markers.
Doornbos, Durk A. +7 more
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Polar stationary phases for capillary electrochromatography
, 2004 This review article summarizes the variety of polar stationary phases that have been employed for capillary electrochromatographic separations. Compared with reversed-phase stationary phases, the polar alternatives provide a completely different ...
Zou, HF, Xie, CH, Hu, JW, Fu, HJ
core +1 more source
Journal of the Brazilian Chemical Society, 2004 The semi-empirical topological index, previously developed by Heinzen and Yunes, has been applied to predict the chromatographic retention of aliphatic ketones and aldehydes on stationary phases of different polarities (HP-1, HP-50, DB-210 and Innowax ...
Junkes Berenice da S. +3 more
doaj
Thermodynamic Insights into the Separation of Carotenoids in Reversed-Phase Liquid Chromatography
International Journal of Analytical Chemistry, 2019 The retention mechanism of four major carotenoids, two xanthophylls (i.e., lutein and zeaxanthin) and two carotenes (i.e., lycopene and β-carotene), was investigated in reversed-phase liquid chromatography with the aim of thermodynamic analysis.
Nicola Marchetti +4 more
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Makara Journal of Science, 2018 An analytical method to determine polycyclic aromatic hydrocarbons (PAHs) is required to obtain high-quality analytical results. The purpose of this study is to achieve good separation of a few PAHs by using environmentally friendly liquid chromatography.
Asep Kurnia +2 more
doaj +1 more source
The Effects of Stationary Phases on Retention and Selectivity of Oligonucleotides in IP-RP-HPLC [PDF]
Chromatographia, 2014 There is a growing demand for the separation and identification of short nucleic acid fragments, such as oligonucleotides. There were two main goals of the present investigation, namely, evaluation of the impact of stationary phase type and the influence of various ion-pair reagents on the retention behavior of oligonucleotides in ion-pair liquid ...
Studzińska, Sylwia +2 more
openaire +2 more sources
Makara Journal of Science, 2016 Hydrophilic interaction liquid chromatography (HILIC) equipped with an environmentally friendly capillary column was employed to investigate the retention behavior of carbofuran; a polar stationary phase was used as well.
Asep Kurnia +2 more
doaj +1 more source
, 2016 The goal of this study was to elucidate the roles played by the stationary and mobile phases in retention in reversed-phase liquid chromatography (RPLC) in terms of their individual enthalpic and entropic contribution to the Gibbs free energy of ...
Peter W. Carr (1572172) +1 more
core +1 more source