What is chromatography? Why is it named so? What are the advantages of chromatography? … by stationary phase and mobile phase in…
- The process of separating different dissolved constituents of a mixture by their absorption on an appropriate material is called chromatography.
- It is named so, because earlier it was used to separate mixtures containing coloured components only but these days this technique is applied to colourless substances too.
- Advantages of chromatography :
(i) A very small quantity of the substance can be separated.
(ii) Components with very similar physical and chemical properties can be separated.
(iii) It identifies the different constituents of a mixture.
(iv) lt also helps in quantitative estimation of components of a mixture.
- The simplest type of chromatography is “Paper chromatography”.
- Chromotography is based on differential affinities of compounds towards two phases i.e. stationary and mobile phase.
- The filter paper acts as “stationary phase” while the solvent act as “mobile phase”.