Gas Chromatography vs Distillation

ma986
Posts: 21
Joined: Mon Dec 18, 2017 3:43 pm

Gas Chromatography vs Distillation

Postby ma986 » Thu Apr 26, 2018 5:09 pm

Hello!


I was just hoping if you can help me determine the difference between Gas Chromatography and Distillation?

I know both separate through boiling point with the lowest boiling point being separated out first. But then, why do one technique vs the other?


Thanks!

Maria
NS_Tutor_Alexandra
Posts: 8
Joined: Fri Jul 21, 2017 2:42 pm

Re: Gas Chromatography vs Distillation

Postby NS_Tutor_Alexandra » Thu May 03, 2018 11:31 pm

Hi Maria,

This is a great question, and you are totally correct, both methods would allow us to separate compounds by their boiling point. In general, gas chromatography is used to test for purity of a substance or to identify the substance. It can also potentially be used to separate compounds, but keep in mind that gas chromatographs usually separate extremely small samples (only a few microliters at a time!), which makes it a less-than-efficient separation technique. Distillation, on the other hand, is used principally to separate or purify substances.

Happy Studying! :D

Alex

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