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
Liquid Chromatography/Electrospray Tandem Mass Spectrometry of Methylated Purine Bases
β Scribed by Silvia Catinella; Luca Rovatti; Mahmoud Hamdan; Brunetta Porcelli; Barbara Frosi; Enrico Marinello
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 187 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-4198
No coin nor oath required. For personal study only.
β¦ Synopsis
Aqueous solutions containing synthetic mixtures of model methylated purine bases have been examined by liquid chromatography/electrospray tandem mass spectrometry. Efficient chromatographic separation together with characteristic fragment ions derived from selected parent molecular ions allowed fast and reliable identification of the individual components within the investigated mixtures including some isomeric structures. Some of the deductions in the present work regarding the chromatography and mass spectrometry can be easily extended to analysis which may involve biofluids containing members of this class of compounds.
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