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Define Adsorption chromatography - Basic Separation Technique?
Adsorption is surface interaction and is by number of forces, between surface atoms of solids and molecules of external solute. Adsorption chromatography comprises of systems where active absorption occurs at the surface of the solid stationary medium, often alumina or silica gel. Competition for adsorptive sites occurs between the molecules of the mixture to be separated and the molecules of mobile phase, be it gas or liquid.
The speed of migration of a component will depend on its adsorptive affinity relative to the other species present. A number of attractive forces (Vander Waal forces, hydrogen bonding etc.) between the stationary phase and substances to be separated have been recognized and separation takes place due to differences in these adsorption forces.
Direction of Energy Flow Now let us consider the first point that is the direction of flow of energy. Energy flows from lower (producer) to higher (herbivore, carnivore, etc.)
Deficiency of vitamin -A (hypovitaminosis-A) Vitamin A deficiency develops due to insufficient supply of the vitamin or its defective absorption from alimentary tract. The defi
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Explain Taxonomy - Modern Trends in Animal Taxonomy The term taxonomy which is derived from the Greek word 'taxis', meaning order or arrangement and nbmos ' meaning law, deals
Q. Counselling for day to day Management? As we know that diabetes is a chronic disease, a major part of its control requires counselling the patient and his family for day to
What process causes oxygen to pass from the alveoli into the lung capillaries? Diffusion is the process by which oxygen passes from the alveoli to the lung capillaries.
A healthy person is on a diet that having of very small amounts of water. A. This person will make a large volume of dilute urine with low amounts of dissolved solutes. B. T
Mitral Valve Replacement : When mitral valve replacement for a calcified, stenotic valve is done, usually it is a classical procedure removing leaflets, their chordae an
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