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COLLISIONAL ACTIVATION MASS SPECTRA OF M-. IONS OF AZO DYES CONTAINING 2-NAPHTHOL
Citation:
Brumley, W.C., G.M. Brilis, R. Calvey, AND J. Sphon. COLLISIONAL ACTIVATION MASS SPECTRA OF M-. IONS OF AZO DYES CONTAINING 2-NAPHTHOL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/031 (NTIS PB90100983).
Description:
Collisionally activated decomposition mass spectra of M- ions of azo dyes are presented. he compounds are of general structure Ar(l)-N=N-Ar(2), where Ar(l) is substituted phenyl and Ar(2) is 2-naphthol. Characteristic fragment ions observed include m/z 157, which corresponds to the 2-naphthol substituent with cleavage of the -N=N- bond represented as [Ar(2) - N]-. ons of general structure [Ar(1) - NH]- are also observed. arent ion scans of m/z 157 provide a potential screening technique for 2-naphthol-containing azo dyes. Specific results are reported for the chloroform extract of FD&C Red #8, and capillary gas chromatographic introduction is compared with direct exposure probe introduction for the identification of dyes.