| Main Title |
Collisional Activation Mass Spectra of M(1-.) Ions of Azo Dyes Containing 2-Naphthol. |
| Author |
Brumley, W. C. ;
Brilis, G. M. ;
Calvey, R. J. ;
Sphon, J. A. ;
|
| CORP Author |
Environmental Monitoring Systems Lab., Las Vegas, NV. ;Food and Drug Administration, Washington, DC. Center for Food Safety and Applied Nutrition. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA/600/J-89/031; |
| Stock Number |
PB90-100983 |
| Additional Subjects |
Azo dyes ;
Mass spectroscopy ;
Gas chromatography ;
Decomposition ;
Food additives ;
Reprints ;
Ion collisions ;
Biological effects ;
2-Naphthal
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-100983 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
Collisionally activated decomposition mass spectra of M- ions of azo dyes are presented. The compounds are of general structure Ar(1)-N=N-Ar(2), where Ar(1) 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)-. Ions of general structure (Ar(1) -NH)- are also observed. Parent 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 No.8, and capillary gas chromatographic introduction is compared with direct exposure probe introduction for the identification of dyes. (Copyright 1988 by John Wiley & Sons, Ltd.) |
