Sample preparation

Sample preparation - context
Sample preparation - motivation
Purpose of sample preparation
Overview of preparation methods
     Liquid liquid extraction (LLE)
     Solid phase extraction (SPE)
     Solid phase microextraction (SPME)
     Purge and trap (PT)
     (Accelerated) Solvent extraction ((A)SE)
     Supercritical fluid extraction (SFE)
     Filter Techniques (FT)
Box 10 Filtration
Box 11 Sorbents
Box 12 Preconcentration
Selftest
Problems
     1) Adsorbents
           Answer
     2) Purge and trap
           Help
           Answer
     3) Solvents for liquid extraction
     4) Concept map
     5) Cargo screening
           Answer
End of chapter

1) Adsorbents

 

Problem:

1a) What properties should an adsorbent have that is used to clean a moist exhaust gas stream?
Which of the following materials would you use: quartz sand, clay, peat, glas beads, and/or activated charcoal?

1b) Can you think of reasons why adsorbents are typically preferred over absorbents?

 

proceed to answer