Investigation on Scavenging of Fenton Produced Hydroxyl Radical by Dimethyl Sulfoxide

Fenton was a reaction between H2O2 with Fe(II) in solution,which could produce ·OH radical.The scavenging of hydroxyl radical produced from Fenton reaction using dimethyl sulfoxide(DMSO) was mainly investigated.Through analysis of the generation of the intermediate by-product of HCHO,the amount of produced hydroxyl radical could be estimated.Besides,the chemical reaction modeling of the reaction between DMSO with Fenton reagents was also performed to investigate the effects of DMSO initial concentration and solution pH on production of hydroxyl radical.The results were that ·OH was completely scavenged by 246 mmol/L of DMSO,when pH5,the oxidation potential of Fenton system was enhanced through increasing H+,and when pH5,the oxidation potential of Fenton system was weakened.