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Laser desorption fourier transform mass spectra of ascorbic and isoascorbic acids
Author(s) -
Coad Peter,
Coad Raylene A.,
Yang Cathy L. C.,
Wilkins Charles L.
Publication year - 1987
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210220205
Subject(s) - chemistry , mass spectrum , ascorbic acid , analytical chemistry (journal) , fourier transform ion cyclotron resonance , microprobe , ion , potassium , mass spectrometry , spectral line , fourier transform , desorption , laser , chromatography , mineralogy , organic chemistry , optics , adsorption , astronomy , mathematical analysis , mathematics , physics , food science
Positive and negative ion laser desorption Fourier transform mass spectra of ascorbic acid, isoascorbic acid, and their sodium and potassium salts have been determined. A number of differences between these spectra and previously reported laser microprobe mass analyzer (LAMMA) spectra are found. In contrast with earlier results, m / z 175 anions are present in all negative ion spectra, as are cluster ions. Thus, it should not be concluded that the radical salts are electroneutral, as claimed in the earlier study.