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Gas
Chromatography

Purpose: The purpose of the gas chromatography lab is to find out how different substances interact with the surface of a solid. Chromatography is a separation technique that depends on the relative distribution of the components of a mixture between a mobile phase and a solid stationary phase. Chromatography measures the tendency of a substance to interact with the surface of a solid or to remain in a mobile phase. When doing a chromatography lab the mobile phase has to be a substance that is either in a liquid or a gas state. In this lab the mobile phase was a gas, which is why this is called a gas chromatography lab. The different gases tested in this lab were CHCl3 and CH2Cl2. It is determined to what extent a gas interacts with the solid by injecting a known amount of the mobile gas into the carrier gas and then measuring the concentration that comes out at the end of the column. From this there was a detector that transferred the information to...

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Title: Gas Chromatography
Approximate word count: 1434
Approximate pages: 6 (250 words per double-spaced page)

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