Fourier-transform mass spectrometry of large molecules by electrospray ionization.

  title={Fourier-transform mass spectrometry of large molecules by electrospray ionization.},
  author={Klauku Henry and Evan R Williams and B Hsiao-Wei Wang and Fred W. McLafferty and Jeffrey Shabanowitz and Donald F. Hunt},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={86 23},
The multiply charged ions produced by electrospray ionization of peptides of molecular masses up to 29 kDa have been successfully introduced into a Fourier transform mass spectrometer of unique capabilities for tandem mass spectrometry, large ion dissociation, and resolution. Electrospray ionization places an unusually high number of charges on a peptide yielding mass/charge (m/z) values of 600-1500; in this range at normal operating pressures (approximately 10(-9) torr; 1 torr = 133.3 Pa… CONTINUE READING


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