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Journal of Lipid Research, Vol. 24, 456-460, April 1983
Copyright © 1983 by Lipid Research, Inc.

Ammonia chemical ionization mass spectrometry of intact diacyl phosphatidylcholine

C. G. Crawford and R. D. Plattner

Northern Regional Research Center, Agricultural Research Service, United States Department of Agriculture,¹ Peoria, IL 61604

Mass spectra have been obtained on molecular species of intact diacyl phosphatidylcholine by means of ammonia gas-induced chemical ionization. MH⁺ ions were observed with all species, and other prominent ions in the spectra identified the fatty acid composition. Spectra of phosphatidylcholine containing deuterated methyl groups and spectra obtained using [¹⁵N]ammonia have allowed identification of fragments containing choline methyl groups and ammonium adducts.—Crawford, C. G., and R. D. Plattner. Ammonia chemical ionization mass spectrometry of intact diacyl phosphatidylcholine.

Supplementary key words deuterated methyl groups • [¹⁵N]ammonia

Submitted on June 27, 1982
Revised on November 3, 1982

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