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Gas Chromatography - PowerPoint PPT Presentation


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Gas Chromatography. Retention time of CCl 4 is less than retention time of CH 3 OH. polar column. CCl 4. Carbon tetrachloride is nonpolar and is not attracted to solvent and therefore travels rapidly through column.

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slide3

Retention time of CCl4 is less than

retention time of CH3OH

polar column

CCl4

Carbon tetrachloride is nonpolar and is not attracted to solvent and therefore travels rapidly through column.

Methyl alcohol (CH3OH) is polar and is attracted to solvent and therefore travels slowly through column.

CH3OH

Sand coated

with solvent

slide5

Gow Mac

500 Series

Gas Chromatograph