| Abstract
| - Matrix-assisted laser desorption/ionization has been combined with high-energy collision-induced dissociation forthe analysis of poly(ethylene glycols) with butanoyl,benzoyl and acetyl end groups, using novel technologycomprising a magnetic-sector mass spectrometer and ionbuncher with an in-line quadratic-field ion mirror. High-energy (>8 keV) collision-induced dissociation facilitatedunambiguous end-group determination of these polymers,providing masses of end groups and structural information. The high-energy collision-induced dissociation alsoprovided information regarding repeat units.
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