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Thursday, May 17, 2012
Chromatography
PAPER CHROMATOGRAPHY
Chromatography
is used to separate mixtures of substances into their components. All
forms of chromatography work on the same principle.
They all have a stationary phase (a solid, or a liquid supported on a solid) and a mobile phase
(a liquid or a gas). The mobile phase flows through the stationary
phase and carries the components of the mixture with it.
In paper chromatography, the stationary phase is a very uniform
absorbent paper while the mobile phase is a suitable liquid solvent or
mixture of solvents.
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