What type of sample preparation is often required for solid samples in IR spectr

Practice Questions

Q1
What type of sample preparation is often required for solid samples in IR spectroscopy?
  1. Dissolving in water
  2. KBr pellet formation
  3. Dilution in ethanol
  4. Heating to vaporize

Questions & Step-by-Step Solutions

What type of sample preparation is often required for solid samples in IR spectroscopy?
  • Step 1: Take a small amount of the solid sample you want to analyze.
  • Step 2: Mix the solid sample with potassium bromide (KBr) powder in a small container.
  • Step 3: Use a mortar and pestle to grind the mixture into a fine powder. This helps to ensure even distribution.
  • Step 4: Take a small amount of the ground mixture and place it in a pellet press.
  • Step 5: Apply pressure to the pellet press to form a solid pellet from the mixture.
  • Step 6: Carefully remove the pellet from the press. It should be clear and thin enough to allow IR light to pass through.
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