Herbicidek fotobomlási folyamatai, különös tekintettel a kinetikára és a végtermékek toxicitására

Abstract

Within this study photodegradation features of four nitrogen-containing triazine-derivative herbicides (atrazine, cyanazine, terbuthylazine, terbutryn) were examined. The compounds were degraded completely by a high pressure mercury vapour lamp, and the degradation process was followed by consecutive gas chromatographic measurements. The structure of degradation products was determined by gas chromatographic – mass spectrometric measurements. All of the compounds studied had measurable photochemical activity, although the actual and average degradation rates varied significantly. The most significant processes of photodegradation of the studied compounds are the partial or complete loss of sidechains.