ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The NH3 and CH4 chemical ionization mass spectra of leucine and isoleucine are compared with their plasma desorption mass spectra. Mass-analysed ion kinetic energy (MIKE) and collision-induced dissociation (CID)/MIKE experiments are also presented and the mechanisms of the formation and dissociation of immonium ions [M - CO2H2]+ are discussed. A comparison between the various ionization techniques reveals that plasma desorption produces pseudo-molecular ions whose internal energy lies between zero and 300 kJ mol-1.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210281015
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