Hydrogen peroxide is used to replace the luminol's nitrogen atoms with oxygen.
1	Hydrogen	hydrogen	NOUN	NN	Number=Sing	2	compound	2:compound	Discourse=context-background:35->30:2|Entity=(4-substance-giv:inact-cf1-2-coref
2	peroxide	peroxide	NOUN	NN	Number=Sing	4	nsubj:pass	4:nsubj:pass	Entity=4)
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	4:aux:pass	_
4	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	_
5	to	to	PART	TO	_	6	mark	6:mark	Discourse=purpose-goal:36->35:0
6	replace	replace	VERB	VB	VerbForm=Inf	4	advcl	4:advcl:to	Entity=(48-event-new-cf5-1-disc
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	8:det	Entity=(49-substance-new-cf3-5-sgl(18-substance-giv:inact-cf2-2-coref-Luminol
8-9	luminol's	_	_	_	_	_	_	_	_
8	luminol	luminol	NOUN	NN	Number=Sing	11	nmod:poss	11:nmod:poss	_
9	's	's	PART	POS	_	8	case	8:case	Entity=18)
10	nitrogen	nitrogen	NOUN	NN	Number=Sing	11	compound	11:compound	_
11	atoms	atom	NOUN	NNS	Number=Plur	6	obj	6:obj	Entity=49)
12	with	with	ADP	IN	_	13	case	13:case	_
13	oxygen	oxygen	NOUN	NN	Number=Sing	6	obl	6:obl:with	Entity=(50-substance-new-cf4-1-coref)48)|SpaceAfter=No
14	.	.	PUNCT	.	_	4	punct	4:punct	_
