Introduction - have different retention times due to...

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Introduction: The goal of this experiment is to separate the components in common liquid fuels, such as gasoline, white gas, kerosene and then determine their composition by comparing the gas chromatographs with that of the standard compounds. The technique used is called gas chromatography, which achieves separation of the analyte by transporting various components’ vapor through the column at different rates by a gaseous mobile phase, helium in this particular case. In this experiment, different components in the sample solution eventually turned into gaseous state as the temperature increases. Since each component has a different boiling point, they will
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Unformatted text preview: have different retention times due to different amounts of time spent with the stationary phase. Separation on the chromatograph can then be seen. Discussion/ Conclusion: Compounds in the unknown are: n-Pentane, n-Hexane, Benzene, n-Heptane, n-Octane, o-Xylene, 2-Methylpentane, Toluene, and p-Xylene. Both the precision and accuracy of the experiment can be improved if more exotic, larger columns were used. However, the retention times of standard components in the standard run do match up quite precisely with those in the unknown run....
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This note was uploaded on 02/11/2012 for the course CHEMISTRY 15 taught by Professor Bordel during the Fall '11 term at University of California, Berkeley.

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