| 摘要 |
Systems and methods for a mass spectrometer include an atmospheric-pressure chemical ionization (APCI) source, one or more low-pressure chemical ionization (LPCI) sources, a mass analyzer configured to separate ions of a sample flow from the APCI source and the one or more LPCI sources, a detector configured to identify and quantify the received separated ions, and a plurality of valves configured to open and close associated input lines to the APCI source and the one or more LPCI sources, via a computer-implemented controller, and configured to maintain a vacuum environment of the mass spectrometer during the opening and closing. |
