1.

Explain about the principle involved in chromatography. Give its types.

Answer»

1. The principle behind chromatography is selective distribution of the mixture of organic substances between two phases-a stationary phase and a moving phase. The stationary phase can be a solid or liquid while the moving phase is a liquid or a gas.

2. if the stationary phase is solid, the basis is adsorption and when it is a liquid, the basis is partition.

3. Chromatography is defined as technique for the separation of a mixture brought about by differential movement of the individual compound through porous medium under the influence of moving solvent.

4. The various methods of chromatography are:

  • Column chromatography (CC)
  • Thin layer chromatography (TLC)
  • Paper chromatography (PC)
  • Gas liquid chromatography (GLC)
  • Ion exchange chromatography


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