Chromatography

I learnt about the use of chromatography. Chromatography only needs very little amount of the specimen to get a accurate result. The uses of chromatography are: separate and identify mixtures of coloured substance found in food and in dyes, separate substance in drug, urine and blood, find out if athletes have been using banned drugs to enhance performance. On 1p16, we did a paper chromatography of the ink of a black marker.I found that is is not black but a mixture of dark blue, yellow and purple. It was very interesting as I watch the ink slowly separating into different colours.