separation techniques
Post on 18-Jan-2016
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Calculations• If Kd = [organic phase]/[water phase] = 8.0• Calculate the fraction of a sample left in
the water phase after 3 individual separations. The sample that is left in the water phase.
• Awater Aorganic phase
1-x x [x] /[1-x] = 8.0 9x = 8.0 x = .89 0.11 left
11.0 % left
Awater Aorganic phase
0.11 – x x Kd = x/0.11-x = 8.0
9x = 0.88 X = 0.098 0.012 left
Awater Aorganic phase
0.012 – x x Kd = x/0.012-x = 8.0
9x = 0.096 X = 0.0107
0.0013 left
0.13 % l3ft
1.2 % left
Unusual Separation Techniques
Soxhlet Extractor
Gregar Extractor
Paper Chromatography
Thin Layer Chromatography
Electrophoresis
Column Chromatography
Gas Chromatography
n = 16( tR/W)2
Number of Theoretical Plates
Van Deemter Equation
HETP = A + B + c
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