Gas chromatography is an innovative technique that uses an inert carrier gas for separating and quantitating vaporized compounds. It is based on principles similar to column permeation chromatography, ...

Traditional medicines based on plants and plant extracts are widely used in several countries. However, the active components in many such medicines are unknown. In such cases, thin layer ...

THE removal of coloured impurities from solutions by shaking with charcoal is the most familiar application of adsorption, and chemists have shown enterprise in improving the adsorbent by ‘activation’ ...