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
     1) Polar organic solvent
           Answer
     2) Ideal extraction procedures
           Answer
     3) SPME
           Answer
     4) Extraction efficiency
           Answer
     5) Sorption capacity
           Answer
     6) Use as little of an extraction medium as possible
           Answer
     7) Should soil samples be grinded?
           Answer
     8) Solvent volume
           Answer
     9) Extracting an air sample
           Answer
Problems
End of chapter

8) Solvent volume

 

Question:

Assume that 100 ml of a solvent were needed to extract a sample. Does it make sense to subsequently reduce the solvent volume (by evaporation) to 10 ml in order to increase the concentration of the analyte? Are there solvents that are better suited for this than others?

 

proceed to answer