b. Atmospheric Pressure Chemical Ionization (APCI): APCI is similar to ESI in the way samples are introduced and the type of ions formed (protonated or deprotonated molecules). It is not as soft a ...

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including electron ionization (EI), electrospray ionization (ESI), atmospheric pressure chemical ionization (APCI), and atmospheric pressure photo ionization (APPI). Tandem mass spectrometry (MS/MS or ...

The LCQ Fleet MS can be used with electrospray ionization or atmospheric pressure chemical ionization for analysis of positive or negative ions. LCQ Fleet MS can also be coupled to an Accela (Thermo ...