Separate Ink Pigments with Chromatography

Separate Ink Pigments with Chromatography

9th Grade · Science · 30 min

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Learning Objective

I can separate the different pigments in ink using chromatography.

  • 1

    In paper chromatography, a mixture of substances is applied to a filter paper called the stationary phase, while a pure solvent moves over it, called the mobile phase.

  • 2

    The RF value is calculated using the formula: RF = distance traveled by the component from the original line divided by distance traveled by the solvent from the original line.

  • 3

    To prepare the chromatography paper, a line should be drawn with a pencil 2 cm from the end, and the ink spot should be allowed to dry completely between applications.