Chromatography.

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Presentation transcript:

Chromatography

Chromatography An ancient method used to separate parts of a mixture Black ink is a mixture of several colours which can be separated during chromatography

Chromatography Each ink produces a unique banding pattern when absorbed through a solvent called a chromatograph Components that are more soluble in a solvent appear further at the top, components that are less soluble appear at the bottom

Chromatography A chromatograph can be used to identify the type of ink used to write a note at a crime scene.