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What does the term 'retention time' refer to in chromatography?

Practice Questions

Q1
What does the term 'retention time' refer to in chromatography?
  1. The time taken for a sample to be injected
  2. The time taken for a component to pass through the detector
  3. The time a component spends in the stationary phase
  4. The total time of the chromatographic run

Questions & Step-by-Step Solutions

What does the term 'retention time' refer to in chromatography?
  • Step 1: Understand that chromatography is a technique used to separate different components in a mixture.
  • Step 2: Know that there are two phases in chromatography: the stationary phase (where components stick) and the mobile phase (which moves the components).
  • Step 3: Realize that when a mixture is introduced, each component interacts differently with the stationary phase.
  • Step 4: Learn that 'retention time' is the specific time it takes for a component to travel through the stationary phase and reach the detector.
  • Step 5: Remember that different components have different retention times based on their interactions with the stationary phase.
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