Steam Distillation and Chromatography

Lesson 3 of 6 • 6 upvotes • 14:22mins

Sahithisekhar Duggirala

This lesson explains steam distillation and chromatography. Steam distillation is one of the type of distillation which Is used for heat sensitive liquid mixtures. In such case steam is used for heating the mixture to separate the components of the mixture. Mostly this method is employed for aromatic compounds which are heat sensitive. Chromatography is the advanced and most likely used separation technique. The mixture has to be separated is dissolved in a fluid called mobile phase which carries it through a structure holding another material called stationary phase. The different components of mixture travel at different rates causing them to separate. Terminology of chromatography: 1. Analyte- the mixture that is to be separated. 2. Stationary phase- material coated on a plate or tube which is covalently bonded to support particles. 3. Mobile phase- solvent used to dissolve the analyte we need to separate. It helps the particles to move upon stationary phase. Mobile phase may be a liquid a gas or super critical fluid or non polar solvent. 4. Chromatogram- it is a graphical output of chromatography technique with different peaks and patterns corresponding to different components of the mixture