sulfite radical anion , so3-. , which is generated either by non-enzymatic reaction of hydrogen peroxide ( h2o2- ) with sulfite ( so3 ( 2- ) ) or by the oxidation of bisulfite ( hso3 ) with ce4+ ion , can be trapped with a water-soluble , nitroso-aromatic spin-trap , sodium 3,5-dibromo-4-nitrosobenzenesulfonate ( dbnbs , 1 ) , yielding an esr spectrum with coupling constants [ an ( 1 ) = 12.9 g , ah ( 2 ) = 0.8 g ] and a g-value of 2.0063 .
C0003075
anion
C0038750
sulfite