Chromatography
F324
- Created by: Kath
- Created on: 01-06-14 13:24
Other questions in this quiz
2. Which is NOT a use of GC-MS?
- forensic analysis
- drug testing
- treatment of strokes
- airport security
3. What is the definition of retention time?
- distance moved by component divided by distance moved my solvent front
- the time taken for a particular compound to travel through the column to the detector, from injection to leaving the column
- the time taken for the gas to be injected into the column and dissolve in the stationary phase
- the time taken for a particular compound to dissolve in the stationary phase
4. Name the stationary phase in thin layer chromatography?
- liquid solvent
- thin layer of solid inside capillary tubing
- thin layer of adsorbent on inert support
- inert gas
5. Which is NOT a limitation of thin layer chromatography?
- unknown compounds have no Rf value for comparison
- may be difficult to find a solvent which will separate all components
- similar compounds have similar retention times
- similar compounds have similar Rf values
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