POSTCOLUMN PHOTOCHEMICAL CONVERSION OF AROMATIC-AMINES

This study presents UV spectral data for 39 aromatic amines and 3 nitr oaromatic compounds and examines the influence on the compounds of sho rt-term irradiation at 254 nm. It also gives some general characterist ics of the UV spectra of irradiated and non-irradiated analytes. It wa s ascertained that nitro or aminonitro compounds are photochemically m uch more stable than aromatic amines without nitro substituents. Other substituents, for example -OH, -COOH, -SO3H, and -CH3, do not increas e the photochemical stability. Therefore, the alteration of the UV spe ctra for the latter compounds can be used as an additional criterion f or identification; this is shown with waste water from the site of a f ormer ammunition plant as an example.