The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
gas-chromatography mass spectrometry
GC-MS is a hyphenated technique in which a gas-chromatograph is coupled to a mass spectrometer.
GC-MS can be combined with any ionization method suitable to ionize
neutral molecules in the gas phase but in practice electron
ionization (EI) and chemical ionization (CI) in both positive and
negative ion modes are the methods of choice.