What is the purpose of water in ink chromatography?
Also, what is the purpose of the water in chromatography?
1 Answer. Chromatography is a technique used to separate the components of a mixture. Different solvents will dissolve different substances. A polar solvent (water) will dissolve polar substances (water soluble ink in the video below).
Additionally, what is the main purpose of chromatography? The purpose of chromatography in general is to separate molecules based on differences in size, charge or polarity, and solubility. Paper chromatography is no different; it uses paper as the stationary phase and a solvent as the mobile phase.
Similarly, you may ask, why is ink not used in chromatography?
The resins and colouring agents are miscible with other polar organic solvents that we use in the chromatography. So the ink also travels along with the mobile phase. Hence, a paper or sketch pen should never be used to draw a line either on Paper chromatography or a TLC sheet.
Is water always a good solvent in ink separation?
Diverse solvents can be used in ink chromatography. For inks that are water soluble, water is the solvent of choice. For inks that are not soluble in water, methanol, ammonium hydroxide, ethanol, acetone, or hydrochloric acid can be used as solvents.