Retention time in Gas Chromatrography

[Chocolatebear89]

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131. Retention time in GC is MOST affected by the:

A. solubility of the compound in the carrier gas.
B. volatility of the compound.
C. chirality of the compound.
D. affinity of the compound for the column's packing material.

 

[Rabolisk]

How does any chromatography work? What results in different compounds of a mixture being eluted at different times?

 

[Chocolatebear89]

I see, so it's D. Volatility doesn't affect GC at all?

 

[Rabolisk]

The sample has to be volatile in order for it to be used in GC. That doesn't help differentiate between different compounds of the sample though.