One way they can do this is to use a process called chromatography. In the activity below, you can try chromatography to separate colors in a mixture of food coloring! Here's what to do: Place a ...

How it works: This activity is done using paper chromatography. As the liquid moves, it carries the different colored molecules. Molecules of different sizes are deposited in different locations ...

Mixed-mode chromatography media are generally designed with the addition of a spacer and ligand to a bead matrix. The ligand design impacts the strength and specificity of the interactions. Multiple ...

In 1955-56, Dow Chemical scientists Fred McLafferty and Roland Gohlke first demonstrated the combination of gas chromatography (GC) and mass spectrometry (MS) to identify individual substances in a ...

Finally, the film also demonstrates how to calculate Rf values, another aspect of chromatography that students can find challenging. Suggested activities: ...

Chromatography in Greek means to ‘write with colors.’ It is a versatile separation technique developed in 1903 by Mikhail Tswett, a Russian botanist. He separated colorful plant pigments using ...

Liquid chromatography is a technique used to separate mixtures of chemical compounds or biomolecules in solution based on differences in the compounds’ relative affinities for a liquid mobile ...

For example, in paper chromatography water is the mobile phase and paper is the stationary phase. The solution's components ideally move at different speeds as they travel through the stationary ...

Reviewed by Dr. Catherine Shaffer, Ph.D. Chromatography (from the Greek words chroma, "color," and graphein, "to write") is a method for the separation of a mixture. In simple terms, the process ...