Record Display for the EPA National Library Catalog


Main Title LC/MS Techniques for the Analysis of Dyes.
Author Yinon, J. ; Betowski, L. D. ; Voyksner, R. D. ;
CORP Author Weizmann Inst. of Science, Rehovoth (Israel). Dept. of Environmental Sciences and Energy Research. ;Research Triangle Inst., Research Triangle Park, NC.;Environmental Monitoring Systems Lab., Las Vegas, NV.
Publisher 1995
Year Published 1995
Report Number EPA-R-819555; EPA/600/A-95/072;
Stock Number PB95-217717
Additional Subjects Azo dyes ; Chromatographic analysis ; Spectroscopic analysis ; Analytical chemistry ; Procedures ; Gas chromatography ; Liquid chromatography ; Mass spectroscopy ; Chemical analysis ; Separation ; Charts(Graphs) ; Sulfonated dyes ; Thermospray ; Electrospray
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB95-217717 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 57p
Dyestuffs are of major environmental interest because of their widespread use as colorants for e.g., textiles, paper, leather, and foodstuffs. Synthetic intermediates, by-products and degradation products could be potential health hazards because of their toxicity or carcinogenicity. Most dyes, including sulfonated azo dyes are nonvolatile or thermally unstable, and therefore, are not amenable to gas chromatography (GC) or gas phase ionization processes. Thus, GC/MS techniques cannot be used. However, the combination of liquid chromatography (LC) with mass spectroscopy (MS) enables the separation of nonvolatile, thermally unstable, and polar dyes for introduction into the MS for identification. As a result of interfacing LC with MS, three major types of interfaces and LC/MS techniques have been developed: (1) Thermospray, (2) Particle Beam, and (3) Ion Spray and Electrospray. This chapter describes the application of these LC/MS techniques in the analysis of dyes.