Determination of Ephedrine-Type Alkaloids in Dietary Supplements by LC/MS Using a Stable-Isotope Labeled Internal Standard
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ID: 270315
2001
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Abstract
Arapid, isocratic method for the separation of 6 ephedrine-type alkaloids which may occur in dietary supplements was modified to permit quantitation and confirmation by liquid chromatography/mass spectrometry using atmospheric pressure chemical ionization. Several columns and sets of conditions were examined for suitability and the results compared. The use of ion-pairing reagents to enhance resolution is also reported. Mass spectrometric conditions were adjusted to provide sufficient fragmentation for qualitative identification of the analytes. Stable-isotope labeled ephedrine was used as an internal standard for quantitation.
| Reference Key |
musser2001journaldetermination
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| Authors | Martha L Gay,Kevin D White,William R Obermeyer,Joseph M Betz,Steven M Musser;Martha L Gay;Kevin D White;William R Obermeyer;Joseph M Betz;Steven M Musser; |
| Journal | journal of aoac international |
| Year | 2001 |
| DOI |
10.1093/jaoac/84.3.761
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| URL | |
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