Characterization of sulfonated azo dyes and aromatic amines by pyrolysis gas chromatography/mass spectrometry
โ Scribed by Astrid Rehorek; Alexander Plum
- Book ID
- 105890996
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 406 KB
- Volume
- 388
- Category
- Article
- ISSN
- 1618-2650
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## Abstract A novel method based on thermal desorption was developed for the trapping of aromatic amines from azo dyes reduction in liquid phase. Combining GCโMS, the detection limits for 21 kinds of aromatic amines ranged from 0.1 to 3 mg/kg. The recoveries of most aromatic amines were โช70% with R
Eight monosulfonated and disulfonated azo dyes were analyzed using liquid secondary ion mass spectrometry/ tandem mass spectrometry, in the negative ion mode, under low-energy collision conditions (110-150 eV). Many structurally characteristic fragment ions were obtained, several of which have not b