2.2. Desorption and Extraction Techniques

Try these first

1. 1.

   What is the process of adsorption?

   Hint

   Think about how things can cling to a sticky surface.

2. 2.

   List one common adsorbent used in vapor sampling.

   Hint

   It's a very effective material for trapping gases.

3. 3.

   What is adsorption?

   • Process of sticking molecules to a surface
   • Breaking down a substance
   • Mixing solid and liquid

   Hint

   Consider what happens when a sponge soaks up water.

4. 4.

   True or False: Thermal desorption requires a liquid solvent.

   • True
   • False

   Hint

   Think about how heat can change the state of a material.

5. 5.

   Design a sampling system for a volatile organic compound located in a rural area with low air circulation. What considerations would you need to take into account regarding adsorbent choice, sampling time, and environmental impacts?

   Hint

   Think about environmental stability and how it influences the adsorptive potential.

6. 6.

   Explain how pressure changes can impact desorption efficiency during a sampling process.

   Hint

   Consider how gas behaves under compressed conditions.