Kinetics and Mechanistic Studies of Photochemical and Oxidative Stability of Galaxolide

Studies on kinetics of galaxolide (HHCB) degradation under influence UV, simulated sunlight and some advanced oxidation processes (H2O2, UV/H2O2, Vis/H2O2) were conducted. Galaxolide appeared to be a photolabile compound. The first-order model was assumed for all studied processes. It observed that basic pH favored HHCB degradation. natural matrices (river water artificial sweat) direct photolysis examined. stated the process photodegradation proceeded slower at presence each matrix. lactone identified using GC-MS technique. recorded chromatograms showed apart from lactone, other products formed we could not identify. In order deeper understand process, DFT calculations performed. results pointed out OH radicals play key role in decomposition, which mainly proceeds via H abstractions as well additions. follows visible light is sufficient initiate (AOPs) oxidative conditions, whereas UV irradiation needed start decay with no agents.