Binding energies of different surveys and their expected bonds.

Comp.	Scan type	Binding energies peaks (ev)	Peak refers to
H1	C 1s	284.6	C–C
		288.5	–C O
		286.08	C–N
	O 1s	530.1	O2− (Fe2O3 mainly)
		531.66	OH− of FeOOH
		532.81	O2 of adsorbed water
	N 1s	398.4	N–Fe
		403.5	Protonated nitrogen atoms of the hydrazine group
	Fe 2p	706.9	Fe0
		710.6	Fe2O3/Fe3O4/FeOOH
		713.69	FeCl3
		718.96	Ferric compounds satellites
H2	C 1s	285.02	C–C
		286.6	–C O
		288	C–N
	O 1s	530.1	O2− (Fe2O3 mainly)
		531.67	OH− of FeOOH
		532.79	O2 of adsorbed water
	N 1s	398.68	N–Fe
		402.48	Protonated nitrogen atoms of hydrazine group
	Fe 2p	710.6	Fe2O3/Fe3O4/FeOOH
		712.8	FeCl3
		719.65	Ferric compounds satellites
H3	C 1s	284.5	C–C
		289	–C O
		286.4	C–N
	O 1s	529.82	O2− (Fe2O3 mainly)
		530.24	OH− of FeOOH
		532.62	O2 of adsorbed water
	N 1s	398.8	N–Fe
		403.9	Protonated nitrogen atoms of the hydrazine group
	Fe 2p	707.01	Fe0
		710.89	Fe2O3/Fe3O4/FeOOH
		713.98	FeCl3
		719.3	Ferric compounds satellites