Alharbi, SK, Kang, J, Nghiem, LD, van de Merwe, JP, Leusch, FDL & Price, WE 2017, 'Photolysis and UV/H 2 O 2 of diclofenac, sulfamethoxazole, carbamazepine, and trimethoprim: Identification of their major degradation products by ESI–LC–MS and assessment of the toxicity of reaction mixtures', Process Safety and Environmental Protection, vol