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Fragment-molecule adduct ion formation in positive methane chemical ionization mass spectrometry1 (1988)

Maiyanoff, Cynthia A. ; Caldwell, Gary W. ; Chang, S. Y.

Chichester : Wiley-Blackwell

Biological Mass Spectrometry 23 (1988), S. 129-134

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ISSN: 0030-493X

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Fragment-molecule (F+M) adduct ions of a variety of heterocyclic systems have been observed in positive methane chemical ionization spectra at relatively low sample concentrations, i.e. in the microgram range. The relative abundance of these adduct ions increases with sample concentration. Possible mechanisms of formation of F+M are discussed. Formation of such ions should be recognized as an artifact, otherwise such F+M adduct ions in chemical and electron ionization may be mistaken for impurities present in a sample.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/oms.1210230211

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