A Toolkit to Quantify Target Compounds in Thin Layer Chromatography Experiments

05 October 2018, Version 2
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Thin layer chromatography (TLC) is one of the basic experimental procedures in chemistry and allows the demonstration of various chemical principles in an educational setting. An often-overlooked aspect of TLC is the capability to quantify isolated target compounds in an unknown sample. Here, we present a suitable route to implement quantitative analysis in a lesson plan. We provide a free, stand-alone software that allows students to obtain quantitative information and present two suitable experiments, namely the absorbance-based quantification of the colorant Sudan IV and the fluorescence-based quantification of Rhodamine 6G, a fluorophore widely used in biotechnology. Students conduct TLC experiments following established routes, then take pictures of their TLC plates with their mobile phones and finally quantify the amount of different compounds in the separate bands they observe.

Keywords

quantitative analysis
thin layer chromatography
classroom experiments

Supplementary materials

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SI Educational TLC Paper v10
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qTLC v3 macOS sepRT
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qTLC v3 macOS standalone
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qTLC v3 Windows sepRT
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qTLC v3 Windows standalone
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