Two-way conversation with a mass spectrometer: nondestructive interactive mass spectrometry

Area of Science:

• Analytical Chemistry
• Physical Chemistry

Background:

• Traditional mass spectrometry often involves destructive detection, necessitating repetitive experiments for parameter variation.
• Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) provides nondestructive detection, preserving ions for subsequent analysis.

Purpose of the Study:

• To demonstrate interactive mass spectrometry for the first time.
• To enable real-time manipulation and redetection of ions without re-generating them.

Main Methods:

• Utilizing Fourier transform ion cyclotron resonance mass spectrometry's nondestructive detection capabilities.
• Implementing an interactive workflow allowing operator-defined choices after each experimental stage (e.g., ion generation, isolation, dissociation, detection).

Main Results:

• Demonstrated the ability to perform mass spectrometry interactively.
• Showcased the capacity to vary experimental parameters in real-time without repeating the entire experiment.
• Facilitated testing of parameter effects by adjusting subsequent experimental steps without fresh ion supply.

Conclusions:

• Interactive mass spectrometry significantly speeds up the development of complex experimental sequences.
• This approach is highly beneficial for optimizing the sequencing and structural analysis of trace amounts of biomacromolecules.
• Enables efficient structural elucidation of peptides, nucleic acids, and oligosaccharides using minimal sample quantities.