1.1. :Vapour - Part 2

Try these first

1. 1.

   What is a Tedlar bag used for?

   Hint

   Think about how it captures air.

2. 2.

   Define adsorption.

   Hint

   It's like how honey sticks to a spoon.

3. 3.

   What is the main purpose of using adsorption in sampling?

   • To release the analyte
   • To trap the analyte
   • To dilute the analyte

   Hint

   Think about what happens to the analyte.

4. 4.

   True or False: Thermal desorption involves using solvents to extract analytes.

   • True
   • False

   Hint

   Recap the main difference between the methods.

5. 5.

   Design a sampling system that avoids breakthrough when sampling volatile organic compounds. Describe the components and their functions.

   Hint

   Consider how each component plays its role in the system.

6. 6.

   Explain the relationship between flow rate and adsorption efficiency in sampling. What modifications would you suggest to improve accuracy?

   Hint

   Reflect on the mechanics of trapping and time.