APCI II
Atmospheric pressure chemical ionization (APCI) is used for less polar molecules where ESI fails to deliver reasonable quantities of ions. In contrast to ESI, it produces mainly singly-charged ions even for larger molecules.
APCI is only limited in the case of thermally unstable compounds, since evaporation of the solvent is done by heating the sample in the nebulizer needle. APCI is often used for metabolomics as well as for drug or pesticide screening.
The DirectProbe (DIP) add-on for the Bruker APCI II and APPI II ion sources allows direct analysis of liquid and solid samples without tedious sample preparation.
In routine organic synthesis analyses, it simplifies identification and characterization of chemical reaction products without compromising sensitivity.
Fields of applications:
General Chemistry (synthesis control)
Manual quality control of solids (Pharma, oil, explosives)
Customs (drugs of abuse, explosives)
Homeland security
Environmental
Thermal degradation processes (plastic production)
Classical routine analysis (e.g. confirmation of sum formula)
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