The methyl and pentafluorobenzyl esters of the plant hormone abscisic acid were subjected to methane chemical ionization tandem mass spectrometry (MS/MS). The spectra obtained allow the unambiguous identification of abscisic acid in a few milligrams of plant material. In full-scan mode pentafluorobe
Electron ionization and chemical ionization fragmentation of o/p isomers of bisphenol-A with tandem mass spectrometry
β Scribed by Kimmo Peltonen; Risto Kostiainen
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 341 KB
- Volume
- 23
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The fragmentation of o/p isomers of bisphenol-A was examined by using collisionally activated decomposition and the tanden mass spectrometric techniques. Also chemical ionization was performed using methane, isobutane and ammonia. The o/p position of the hydroxy groups in the bisphenol-A molecule directed the fragmentation both in electron and chemical ionization.
π SIMILAR VOLUMES
An improved eluent-jet interface was used to combine flow-injection analysis (FIA) and micro-column liquid chromatography (LC) on-line with mass spectrometry (MS) in the electron ionization (EI) and solvent-independent chemical ionization (CI) modes. Good results were obtained for a series of pestic