Generation mechanism of hydroxyl radical species and its lifetime prediction during the plasma-initiated ultraviolet (UV) photolysis

Through this work, we have elucidated the mechanism of hydroxyl radicals (OH.) generation and its life time measurements in biosolution. We observed that plasma-initiated ultraviolet (UV) photolysis were responsible for the continues generation of OH center dot species, that resulted in OH center dot to be major reactive species (RS) in the solution. The density and lifetime of OH center dot species acted inversely proportional to each other with increasing depth inside the solution. The cause of increased lifetime of OH center dot inside the solution is predicted using theoretical and semiempirical calculations. Further, to predict the mechanism of conversion of hydroxide ion (OH-) to OH center dot or H2O2 (hydrogen peroxide) and electron, we determined the current inside the solution of different pH. Additionally, we have investigated the critical criterion for OH. interaction on cancer cell inducing apoptosis under effective OH center dot exposure time. These studies are innovative in the field of plasma chemistry and medicine.