Analysis of multiple front formation in the wetting of thin-layer plates.
Multiple fronts were formed when pure liquids such as methanol or heptane and multi-component liquids such as ethanol-toluene mixtures were flowed through initially dry thin-layer chromatography plates, whether the stationary phase was naked silica or octadecyl-silica. A minor modification to a commercially available thin-layer chromatograph allowed the fronts to be clearly seen, and their dynamics to be measured experimentally. A model is proposed to explain their formation and motion.
Velayudhan
A
A
Department of Chemical Engineering, Yale University, New Haven, CT 06520.
Lillig
B
B
Horváth
C
C
D000438:Alcohols; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002855:Chromatography, Thin Layer / Q000295:instrumentation*; D008956:Models, Chemical; D011312:Pressure; D012997:Solvents; D014050:Toluene
D000438:Alcohols; D012997:Solvents; D014050:Toluene