Gas Chromatography Flashcards
1
Q
What is Gas-liquid chromatography (GLC) used for analysing?
A
- Gases
- volatile liquids
- solids in their vapour form
2
Q
What is the stationary phase like?
A
- long, coiled column
- non-volatile liquid is the stationary phase
3
Q
What is the mobile phase like?
A
- An inert carrier gas is used such as helium or nitrogen
4
Q
What is the retention time?
A
- time taken for a component to travel through the column
5
Q
What does the retention time depend on?
A
- attraction between the solute and the stationary and mobile phases
- volatility of the solute
6
Q
What do the relative sizes of the peaks represent?
A
- how much of each compound is in the mixture
