ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The collision-induced decomposition (CID) mass spectra of the protonated and cationized molecules of a number of carbohydrate antibiotics of RMM ranging from 700 to 1500 were studied by means of a four-sector mass spectrometer with a floated collision cell. Helium and argon were used as collision gases. This work illustrates that cationized rather than protonated carbohydrate antibiotics give an increased yield of high-mass ions of diagnostic value. Further, when helium is replaced by argon as collision gas, differences in the CID spectra of MH+ ions become apparent only for molecules of RMM 〉 1400 whereas for [M + Na]+ ions differences are observed for molecules of RMM as low as 1000. These results have been attributed to the deposition of more internal energy in the precursor ion when argon is used, resulting in increased fragmentation.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210290907
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