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Tank Chromatography Introduction: Chromatography is a method used to separate both organic and inorganic compounds so that they can be analysed. Scientists often use chromatography to figure out which basic constituents makes up a specific mixture. Chromatography relies on the principle of selective absorption. A botanist named M.S. Tswett in 1906 first discovered chromatography. Tswett used a method called 'column chromatography' to separate chlorophylls by pouring petroleum-ether extract of green leaves into a column of powdered calcium carbonate. The compounds slowly move downwards through the glass column and each compound of the chlorophyll is absorbed into beds at different heights depending on their individual absorption affinity. Forensic scientists heavily rely on chromatography currently when solving crimes. It is also used for various purposes such as determining the presence of cocaine in urine, alcohol in blood and how much lead there is in water. Each of these are very important uses and chromatography is the...

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