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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.
What is a centimorgan? The Centimorgan, or The recombination unit, by convention is a distance between two linked genes that corresponds to 1% of recombination frequency of the
Needlestick/sharp instrument injuries are of major concern to health care workers. All of the significant exposures reported in the academic year 2003/04 in our Faculty, were injur
Define Estimation of Iron in any Solution? Iron can be determined calorimetrically. The principle is described next. Principle The iron is determined in the solution or d
How can we increase of total peripheral resistance? A. A decrease in the diameter of every arteriole. B. An increase of sympathetic discharge to all the smooth muscles
Define Urinary Excretion Test - Thiamin Status? The urinary excretion of thiamin is an index of recent dietary intake of the vitamin. Hence, determination of thiamin in urine s
How can Prevent the Symptoms Associated With Food Intolerance? Taking a few simple steps can help prevent the symptoms associated with food intolerance. These steps include:
Echocardiography Utilizes principle of ultrasound for visualization of heart and great vessels. It uses sound in the frequency of 1-10 MHz. As the frequency of probe increase
Why is the human placenta referred to as haemochorial type? Name the hormone it secretes to facilitate parturition.
what is respiration?
a) What process is responsible for the movement of carbon dioxide into a leaf? b) In what conditions might the same process cause oxygen to enter a leaf? (a) Diffusi
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