what is chromatography?state its two applications.
Chromatography is a method by which a mixture is separated by distributing its components between two phases
Uses - 1. Chromatography has evolved to be one of the most widely used chemical techniques to separate particles and contaminates in chemical plants. For example, in the chemical industries, pesticides and insecticides like DDT in groundwater, and PCBs (Polychlorinated biphenyls) are removed with the help of thin layer chromatography.
2.The chromatography technique can also be used to separate any amount of quantities ranging from micrograms in laboratories to tons in chemical plants.
Chromatography is widely used for separation, purification, identification and characterisation of both colourless and coloured components of a mixture.
Use 1 : To separate colour substance present in dyes and natural pigments.
Use 2 : To detect an identity drugs present in the blood of criminals in forensic Science.