Problem 7.8

a) The meachnisms of analyte ion formation in API and APCI are very similar. First of all, what is the major instrumental difference between these methods?

b) Write down the sequence from primary ionization to [M+H]+ analyte ion formation in APCI.

c) Positive ions other than [M+H]+ can also occur in APCI.
Which other types of analyte ions are common? Also name the correponding processes leading to their formation.

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