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

3) Solid phase microextraction (SPME)

 

Question:

Which of the desirable goals apply for SPME?

Ideal SPME procedures should...

(1) ...extract a well defined percentage of the target compound out of the sample.

(2) ...extract close to 100% of the target compound out of the sample.

(3) ...extract the target compound in as little solvent or sorbent as possible.

(4) ...extract as many compounds out of the sample as possible.

(5) ...be cheap and can be automated.

(6) ...be quick and safe.

(7) ...cause as little toxic waste as possible.

 

proceed to answer