Thursday, August 25, 2011

Size exclusion chromatography




Size exclusion chromatography :

Subdivided into
1 -  gel filtration
2 – gel permeation chromatography

Use aqueous solvents and hydrophilic packings.
 nonpolar organic solvents and hydrophobic packings .
Packing for size-exclusion chromatography consists of small silica or polymer particles containing a network of uniform pores into which solute and solvent molecules can diffuse . 

Advantage of Size-Exclusion Chromatography

1 - Short separation time
2 - Good sensitivity
3 - Freedom from sample loss
4 - Absence of column deactivation

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