Laser desorption mass spectra of malto-oligomers, including starch, have been obtained using Fourier transform mass spectrometry. Fragmentations of these oligomers have been examined after doping with metal salts to obtain cation-attachment ions. Doping starch with NaCl, KBr and Ag,O results in anal
Laser desorption Fourier transform mass spectra and mass measurement accuracy for bradykinins
β Scribed by Charles L. Wilkins; Cathy L.C. Yang
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 785 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0168-1176
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Natural polymers, humic acid and lignins, were investigated by laser desorption (LD) Fourier transform mass spectrometry. In the vapor phase under LD conditions only positive ions of humic acid were observed up to m/z 700. Under the same conditions all the lignins investigated prefer to form negativ
Laser desorption/Fourier-transform mass spectrometry (l.d./F t.m.s.) has been used to investigate the feasibility of desorbing nucleosides, oligosaccharides, and glycosides into the gas phase. Nucleosides were desorbed as (M -H)-ions or as (M + H)+ or more readily as alkali metal ion cationized spec