Multiple compensation voltage fraction collection

A method, comprising:

• introducing ions from an ion source into a field asymmetric-waveform ion-mobility spectrometry (FAIMS) device;
• opening an injection gate of a mass spectrometer, the mass spectrometer coupled to an outlet of the FAIMS device;
• and
• while the injection gate is open, dynamically varying a compensation voltage (CV) applied to an electrode of the FAIMS device to transmit ions from the FAIMS device into a mass analyzer of the mass spectrometer.

One or more non-transitory computer-readable media comprising computer-executable instructions for causing an apparatus to perform operations comprising:

• introducing ions from an ion source into a field asymmetric-waveform ion-mobility spectrometry (FAIMS) device;
• opening an injection gate of a mass spectrometer coupled with an outlet of the FAIMS device;
• and
• while the injection gate is open, applying a dynamic compensation voltage (CV) to an electrode of the FAIMS device to transmit ions of at least two adjacent CV fractions from the FAIMS device into a mass analyzer of the mass spectrometer.