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Fast atom bombardment mass spectra of involatile monophosphonated and mixed sulphonated/monophosphonated azo dyestuffs

โœ Scribed by John J. Monaghan; Michael Barber; Robert S. Bordoli; R. Donald Sedgwick; Andrew N. Tyler

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
576 KB
Volume
18
Category
Article
ISSN
1076-5174

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## Abstract Fast atom bombardment mass spectra of a range of involatile mono and disazo sulphonated dyestuffs are presented. Excellent spectra are obtained for dyestuffs containing up to five sulphonate groups. The fragmentations are discussed with special reference to the ions formed by cleavage o

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The FAB mass spectra of four sulphonated merocyanine dyes are investigated. Negative ion spectra are superior to those in the positive ion mode. The special structure of merocyanines with an acidic group at one end of the molecule and a basic group at the other leads to significantly different fragm