Explain The Process Of Chromatography?

Chromatography is a way of separating out mixtures of chemicals. For example the dyes used to make up ink. Different dyes in ink will wash through paper at different rates. Some will stick to the paper and others will dissolve and travel through it quickly. There are 2 methods to try this out Method 1 is drop dots of ink onto filter paper and a wick is cut from the paper... To do this have a circle of filter paper and cut from the edge into the middle and then from the edge about 1 cm from where you already cut, into about 1 cm away from the first cut i.e 2 parallel cuts to make the cut part be bent down into a cup/tub of water. Make sure it can reach the water and then you will see it travel up the wick and it will wash the dyes through the paper

or

draw a line with pencil 2 cm from the bottom of a square piece of filter paper and mark dots 2 cm apart where you will put the spots of ink or whatever you are trying to test. Roll the sheet up and place it in a container with 1 cm of water in it. The water (solvent) will seep up the paper and carry the ink dyes with it. Each different dye will form a spot in a different place.

For example if you were to try this on a fountain pen ink cartridge you would see what colours were put together to make that colour ink. The different colours would separate out.

Hope this helps sorry it sounded so complicated.

Chromatography is a method of separating the elements of a mixture. It is used in chemistry to identify the constituents of mixtures of chemicals.

All chromatography involves certain elements. First is the chemical mixture itself, the analyte. Then there is a "mobile phase", which carries the analyte along. Finally there is the "stationary phase" through which the analyte in the mobile phase is passed.

The simplest type of chromatography is done using ink, filter paper and water. Spots of ink (the analyte) are put at the bottom of the filter paper (stationary phase). The paper is placed in a small amount of water (mobile phase). As the water climbs the filter paper it carries the ink with it. If the ink is made of a mixture of colours, these colours move at different speeds through the paper. This means that gradually the different colours will be seen separated on the paper.

Analytical chemists use much more sophisticated methods of chromatography. Gas chromatography uses gas as the mobile phase and inert solids packed in a column as the stationary phase. Mixtures are separated as they pass through the column and detectors placed at the end of the column show when each constituent of the mixture comes out.

High Pressure Liquid Chromatography (HPLC) uses a liquid as the mobile phase.

It means separating two mixtures

A technique that is used to separate mixtures has been attributed with the name chromatography. The term can not be used for any kind of separation but is used only for a process that is performed in a laboratory.

The process involves the passing of the mixture through a stationary phase which ensures the separation of analyte, a substance about which the number of molecules are to be determined. When you are to determine the level of glucose in blood, glucose can be called the analyte as you are determining the level of this very substance in blood. The process involves a mobile phase also

In general you can say that chromatography is a method of separation that is used to exploit the differences in the partitioning behaviour between a stationary phase and a mobile phase that leads to the separation of components present in a mixture.

Separating stuff. :)

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