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Electron impact excitation of ions from larger organic molecules

✍ Scribed by Bing-Huang Wang; Fred W. McLafferty

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
243 KB
Volume
25
Category
Article
ISSN
1076-5174

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✦ Synopsis

M + Na] + ions (m/z 1164) from gramicidin S can be dissociated in a Fourier-transform mass spectrometer with -85% efficiency using a 50 pA beam of 70 eV electrons for 500 ps. Although the fragment ions are smaller, on average, than those from collisionally activated dissociation or 193 nm photodissociation, these also provide extensive sequence information.

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