a) Thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) can be used as examples to explain difference between adsorption and partition. For each of these chromatographic techniques, identify: + the stationary and mobile phase + how the mobile phase moves b) How is the Rf value for a spot on a TLC plate calculated? What can the Rf value be used for? In order to achieve the best separation of several components of different polarity in a mixture spotted on a TLC plate, what guideline should one follow regarding the choice of a developing solvent? (i.e. polar, non-polar, etc.)

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter33: High-performance Liquid Chromatography
Section: Chapter Questions
Problem 33.15QAP
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a) Thin layer chromatography (TLC) and high performance liquid chromatography (HPLC) can be used as examples to explain difference between adsorption and partition. For each of these chromatographic techniques, identify: + the stationary and mobile phase + how the mobile phase moves b) How is the Rf value for a spot on a TLC plate calculated? What can the Rf value be used for? In order to achieve the best separation of several components of different polarity in a mixture spotted on a TLC plate, what guideline should one follow regarding the choice of a developing solvent? (i.e. polar, non-polar, etc.)

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