Paper chromatography

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Fahim Razay    12D

Science applied  


It is suspected that a rival company producing felt tip pens is stealing ideas for new colour from primary colour, a leading felt tip pen manufacturer. The company requires proof before it starts making allegations and requires you to devise a test to determine whether the colours have been stolen. Somebody on the inside of the rival company has supplied the company with same prototype from the rival company for you to test whether the rival felt tip pen manufacturer is stealing ideas for new colours from the other company.


The aim of this coursework is to find if the rival company is stealing the other company’s new idea. To determine if they have stolen news ideas for a new felt tip, I well perform to simple tests however effective (paper chromatography and thin layer chromatography). I well reform tests on the prototype and the company’s felt tip to see any simulates.

Paper chromatography

Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material.

Paper chromatography is an  technique for separating and identifying compounds that are or can be colored, especially . This method has been largely replaced by , however it is still a powerful teaching tool.

Separations in paper chromatography involve the same ideology as those in thin layer chromatography. In paper chromatography, like thin layer chromatography, substances are distributed between a stationary phase and a mobile phase. The stationary phase is usually a piece of high quality filter paper. The mobile phase is a developing solution that travels up the stationary phase, carrying the samples with it. Components of the sample will separate on the stationary phase according to how strongly they adsorb to the stationary phase versus and how much they dissolve in the mobile phase.

The purpose of this experiment is to observe how chromatography can be used to separate mixtures of chemical substances, in this case separate felt tip pen. Chromatography serves mainly as a tool for the examination and separation of mixtures of chemical substances. Chromatography is using a flow of solvent or gas to cause the components of a mixture to migrate differently from a narrow starting point in a specific medium, in the case of this experiment, paper. It is used for the purification and separation of various substances. A chromatographically pure substance is the result of the separation. Because cleansing of substances is required to determine their properties, chromatography is an essential tool in the sciences concerned with chemical substances and their reactions.

Chromatography is also used to compare and describe chemical substances. The chromatographic progression of substances is related to their atomic and molecular structures. A change in a chemical substance produced by a chemical or biological reaction often alters the solubility and migration rate. With this knowledge, alterations or changes can be detected in the substance.

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In all chromatographic separations, there is an important relationship between the solvent, the chromatography paper, and the mixture. For a particular mixture, the solvent and the paper must be chosen so the solubility is reversible and be selective for the works of the mixture. The main requirement, though, of the solvent is the mixture needing to be separated. The absorbent paper used must also absorb the components of the mixtures selectively and reversibly. For the separation of a mixture, the substances making up the mixture must be evenly dispersed in a solution, a vapor. Once all of the above criteria have ...

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