ISSN:
0306-042X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Positive and negative secondary ion mass spectra obtained by bombardment of thin films of leucine-enkephalin and methionine-enkephalin with a pulsed beam of Cs+ ions of energy 5-15 keV were recorded using a time-of-flight mass spectrometer. Many of the secondary ions are metastable. The spectra contain a wealth of information, including the following important features: (i) ions characteristic of the intact molecule, from which the molecular weight may be deduced; (ii) ions diagnostic of the amino acid composition of the peptide; (iii) ions diagnostic of the sequence of amino acids in the peptide.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200090309
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