Table 1.

Reduction potential of the selected ROS at pH=7 at 25 °C

ROS	Half-Reaction	Eo, V, vs. NHE	Eo, V, vs. Eof
Oxygen	O2 + e− → O2·−	−0.1836	−0.56
Hydrogen peroxide	H2O2 + e− +H+ → OH·− +H2O	+0.3936	−0.01
Singlet oxygen	O2 (1Δg) + e− → O2·−	+0.8136	+0.41
Superoxide	O2·−+ e− → O22−	+0.9136	+0.51
Nitrogen dioxide	NO2· + e− → NO2−	+0.9937	+0.59
Hydroperoxyl	HO2· + e− +H+ → H2O2	+1.0536	+0.65
Peroxynitrite	ONOO− + e− +2H+ → NO2·+ H2O	+1.4037	+1.00
Carbonate radical	CO3·− + e− → CO32−	+1.7838	+1.38
Hydroxyl radical	OH·− + H+ + e− → H2O	+ 2.3136	+1.91