chromatography and functional group analysis

• 2 types of chromatography:

  Thin Layer Chromatography

  Gas Chromatography
• Chromatography is used in analysis but is more widely used as a

  method of separation.
• Separation is by adsorption or solubility depending on whether the

  stationary phase is a liquid or a solid
• Overall - different molecules move at different speeds due to their

  differing interactions with the 2 phases:

  1)Thin Layer/Paper Chromatography:

  Solid stationary phase and liquid mobile phase

  2) Gas Chromatography

  Liquid on solid support stationary phase and a gas mobile
• Chromatography is used to separate individual components from a mixture of substances
• All forms of chromatography have a stationary phase and a mobile phase
• The stationary phase does not move and is normally a solid or a liquid supported on a solid
• The mobile phase does move, and is normally a liquid or a gas.
• Chromatography can be used in the analysis of drugs, plastics, flavourings, air samples, and has applications in forensic science.