Mass spectrometry of ochratoxin A (OTA) and B (OTB) under electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) was studied. ESI offers higher sensitivities and less fragmentation than APCI. A sensitive LC/MS/MS method for the determination of ochratoxin A (OTA) in human
Normal-phase Liquid Chromatography Class Separation and Species Determination of Phospholipids Utilizing Electrospray Mass Spectrometry/Tandem Mass Spectrometry
✍ Scribed by Anders Å Karlsson; Peter Michelsen; Åsmund Larsen; Göran Odham
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 408 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0951-4198
No coin nor oath required. For personal study only.
✦ Synopsis
Membrane phospholipids have been separated into classes by normal-phase chromatography using electrospray (ES) mass spectrometry or with tandem mass spectrometry (MS/MS) for species determination. Biological samples, taken from patients seeking a remedy for gastric catarrh or gastric ulcer were examined. It was found, by altering the cone voltage and changing between positive-and negative-ion modes in ES, that in most cases it was possible to obtain structural information for the molecular species and fatty acids present. MSfMS was employed to achieve accurate species determination.
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