Separation of analytes

Separation of analytes - context
Analyte mixtures and separation - 1
Analyte mixtures and separation - 2
Analyte mixtures and separation - 3
Introduction to chromatography
Chromatographic columns
Principle setup of a chromatographic unit
Example of separation
Chromatographic system - 1
Chromatographic system - 2
Standard gas chromatograph
(Old) liquid chromatography unit
(New) liquid chromatography unit
HPLC columns
Comparison GC and HPLC
Selftest
Problems
     1) GC-columns
           Answer
     2) Which peak corresponds to 1,2,4-TCB?
           Answer
     3) Peak area 100 times larger
           Answer
     4) Unlabeled GC columns
           Help
           Answer
     5) Which animation is correct?
           Answer
     6) Concept map
           Hint
End of chapter

2) Which peak corresponds to 1,2,4-TCB?

 

Problem:

The gas phase above a commercial standard of 1,2,4-trichlorobenzene (liquid with a purity of 97%) is sampled with a gas-tight syringe and is subsequently injected into a GC. The resulting chromatogram shows 3 distinct peaks of equal area (equal means same concentration in the injected sample). How is that possible? Which peak corresponds to 1,2,4-TCB?