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The Analysis of Polysulfonated Azo Dyestuffs by Matrix‐assisted Laser Desorption/Ionization and Electrospray Mass Spectrometry
Author(s) -
Sullivan Anthony G.,
Gaskell Simon J.
Publication year - 1997
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19970422)11:7<803::aid-rcm885>3.0.co;2-o
Subject(s) - chemistry , mass spectrometry , extractive electrospray ionization , electrospray ionization , sample preparation in mass spectrometry , ionization , electrospray , desorption , chromatography , condensation , mass spectrum , ion source , analytical chemistry (journal) , ion , organic chemistry , physics , adsorption , thermodynamics
Electrospray ionization and matrix‐assisted laser desorption/ionization have been applied to the analysis of polysulfonated azo dyestuff mixtures. Three homologous orange dyestuffs were synthesized using a harsh, two‐stage process involving a condensation followed by a reduction and, producing complex product mixtures. The negative‐ion spectra provide clear molecular weight information for the components of the mixtures containing five or six sulfonic acid groups, allowing rapid identification of product composition at both the condensation and reduction stages of synthesis. © 1997 John Wiley & Sons, Ltd.