Electron impact ionized purine bases such as caffeine and its metabolites (theophylline, theobromine, paraxanthine, 1-metbylxanthiw, 3methylxnntbine and 7-metbylxanthiw) were characterized by tandem mass spectrometry. The direct analysis of human urinary extracts by tandem mass spectrometry allows t
β¦ LIBER β¦
The use of electron impact and positive chemical ionization mass spectrometry in the screening of beta blockers and their metabolites in human urine
β Scribed by M. S. Leloux; R. A. A. Maes
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 574 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1076-5174
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