Oxidation of Sb(III) to Sb(V) by O2 and H2O2 in aqueous solutions

It could be concluded that O2 was unlikely to be a significant oxidant in homogenous solution, but that H2O2 might be responsible for the oxidation of Sb(III) in natural waters since half-lives could vary from 32 yr to 117 days at pH 8 with H2O2 concentrations between 10−8 M and 10−6 M, respectively.