In chromatography, specifically paper chromatography, the upper portion of the solvent column exhibits higher kinetic energy compared to the lower portion. This difference arises because the lower portion encounters more obstacles due to absorbed water molecules, hindering its movement. The discussion clarifies the terminology used, distinguishing between the upper and lower areas of the solvent column on the paper strip.
PREREQUISITESChemistry students, laboratory technicians, and researchers interested in chromatography techniques and the dynamics of solvent movement.
I'm referring to paper chromatography. And by upper portion, I mean the upper area where the solvent column on the paper strip is moving forward, and by lower portion I mean the lower area on the paper strip where the solvent column appears to have stopped.DrClaude said:This question is hard to understand. What kind of chromatography are you referring to? And what do you mean by "upper portion" and "lower portion"?