Page 57 - Applied Pharmacognosy
P. 57
Classification of Chromatographic Techniques
According to the Mode of Retention
1. Adsorption Chromatography.
What are the Factors affecting adsorption Chromatography ??
b. The solvent strength: Elutropic series
• Isocratic means using the same
solvent (single or binary solvents)
during the development process.
• Gradient means using different Solvent
solvents (according to Elutropic System
series, in the order of increasing
polarity) during the development Gradient
process.
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