Table 1.

Examples of reactive species. Reproduced with permission from Graves, D.B., [J. Phys. D Appl. Phys.]; published by IOP Publishing, 2012 [47].

Reactive Species	Form	Example
Reactive oxygen species (ROS)	Radical	HO•, 1[O]2, O2•− HOO•, ROO•, RO•, CO2•−, CO3•−
	Non-radical	O3, H2O2, HOCl, HOI, HOBr, ROOH, CO, ONOOH, ONOO−, O2NOO−, HOOCO2−, (O2 1Dg)
Reactive nitrogen species (RNS)	Radical	NO•, NO2•, NO3•
	Non-radical	ROONO, RO2ONO, CH3C(O)OONO2, N2O4, N2O3, N2O5, HNO2 NO2Cl NO−, NO+
Reactive chlorine species	Radical	Cl•
	Non-radical	ClBr, Cl2, ClO2
Reactive sulfur species	Radical	S•
	Non-radical	H2S, RSSR, RS(O)SR, RSOH, RS(O)2SR, RSR’