The application of capillary electrophoresis/mass spectrometry using negative‐ion electrospray ionization to areas of importance in the textile industry

The feasibility of using capillary electrophoresis/mass Spectrometry, with negative‐ion electrospray ionization, for applications of relevance to the dyeing and textile industries has been shown. Structurally similar examples of solubilized vat dyes of different halogen content have been separated and identified with a view to investigating the photodegradation processes which occur when the dyes are subjected to UV light. Separations of the various species formed when a mordant dye is chrome treated are also presented, indicating the ability to study complex formation arising from the different chrome dyeing methods.