In TLC, the mobile phase (the solvent) only comes into contact with the dry stationary phase after the start of the separation. Its composition depends on the original solvent composition, which is modified by
Aqueous micellar solutions can be used in reverse phase TLC providing the ionic strength of the solution is sufficiently high to prevent the destruction of the stationary phase. Stability curves have been determined for sodium dodecyl sulfate and cetyltrimethylammonium chloride containing aqueous mobile ...
What is the term for chromatography in which the mobile phase is a gas, usually helium or nitrogen? Separation of Plant Pigments by Thin Layer Chromatography 1. What does TLC stand for? 2. Define TLC, mobile phase, and stationary phas...
The velocity of migration of the mobile phase in the sorption layer of a chromatographic plate and the ratio of the volume of the stationary phase to that of the mobile phase, Vs/Vm, determine the time of separation and the deviation of the observed values for the relative migration ...
TLC. 2003, 16 (5), 363- 368.Perisˇic´-Janjic´, N.U.; Djakovic´-Sekulic´, T.Lj.; Popov-Pergal, K. Effect of the stationary phase and the mobile-phase modifier on the retention of some thiazoles. Correlation with the lipophilicity of the compounds. J. Planar Chroma- to...
Journal of Planar Chromatography-Modern TLC: JPCBarbara O. M, Małgorzata J. and Ludomir K., The effect of stationary phase type and mobile phase pH on the separation of some catecholamines. J. Pla Chroma. 2001;14(4): 256-259.
Transfer of the optimized TLC mobile phase via OPLC to MPLC is demonstrated by the separation of furocoumarin isomers from the roots of Heracleum sphondylium and the ginsenosides from Panax ginseng C. A. Meyer. The separation of anthraquinone aglycones from Rhamnus frangula is an example of ...
Planar chromatographic techniques can be classified according to whether the mobile phase migrates under the action of the capillary forces existing in stationary phase or under the action of forced flow.The first group includes paper chromatography and classic thin-layer chromatography [1-4]. The ...
Silica gel was used as a stationary phase in combination with an acidic surfactant containing eluents for the thin-layer chromatography (TLC) of 10 metal cations. Several combinations of mobile-phase systems consisting of sodium dodecyl sulphate (SDS) and carboxylic acids, alcohols and inorganic ...
Aluminium oxide and carbon tetrachloride–acetone mobile phases in a volume composition of 85:15 were optimal for the separation of the investigated phenols: vanillin (V), guaiacol (G), eugenol (E), and thymol (T). Aluminium oxide and a chlorobenzene–acetone mobile phase in a volume ...