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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).

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chemical ionization (CI)

CI is a relatively soft ionization method used for mass spectrometry. In positive-ion mode, ionization is effected by ion-molecule reactions occurring between ions generated by electron ionization (EI) of a reagent gas and the neutral molecules of the analyte.


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