Made available in DSpace on 2022-04-29T08:33:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-10-01; Dinitrophenylazo dyes can form 2-phenylbenzotriazoles (PBTAs) in the textile dyeing process upon the addition of chemical reducing agents. Some dinitrophenylazo dyes, as well as their respective reduced (non-chlorinated) and chlorinated PBTAs, are now found in rivers owing to wastewater from textile pla...