Degradation of tris(1,3-dichloro-2-propyl) phosphate (TDCPP) by ultraviolet activated hydrogen peroxide: Mechanisms, pathways and toxicity assessments

The ubiquity and ecotoxicity of tri (1,3-dichloro-2-propyl) phosphate (TDCPP) in aquatic environments make it essential to develop efficient related treatment techniques. The present research aims to systematically explore the mechanisms and toxicity changes of TDCPP degradation through UV-driven hydrogen peroxide process (UV/H 2 O 2 ). The results revealed degradation efficiency of TDCPP attained 95 % with 0.5 mM H 2 O 2 , corresponding to a reaction rate constant ( k ) of 0.04919 min −1 . Furthermore, three typical chlorinated OPEs (Cl-OPEs) were simultaneously degraded by the UV/H 2 O 2 process, with different degradation efficiencies, according to the following order: TCEP