Which method of refining may be more suitable if element is obtained in minute quantity?
Explanation Definition Chromatography is a separation technique which is used to separate different components of a mixture. Principle Chromatography is based on the principle that different components of a mixture are differently adsorbed on an adsorbent. Working Chromatography consists of two phases: (i) Mobile phase and (ii) Stationary phase The mobile phase consists of a mixture of the components in a suitable solvent whereas the stationary phase is immobile and immiscible. The mobile phase is then forced to move through the stationary phase. A component which is more soluble in the solvent does not get absorbed easily on the stationary phase and takes a longer time to travel through it. Whereas, the component which is less soluble in the solvent is absorbed quickly on the stationary phase. In this way, the separation of the components is achieved. Final Answer To refine elements which are present in minute particles, chromatography is used as a separation technique. This technique ensures the separation of very low concentrations of the components with high efficiency.
