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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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isobaric ion

Isobaric ions have identical masses (at whatever level of accuracy chosen)  but have differen  atomic compositions. A common  example is a positive ion at m/z 28  which can have the empirical formulas of CO+, N2+ , or  C2H4+.


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