Table 1. Second-Order Rate Constants between Biomolecules and Disinfectants^a.

			apparent second-order rate constant (M–1·s–1)
No.	compounds	PFA (pH = 5.5)	PFA (pH = 7.1)	PAA (pH = 7.0)	PPA (pH = 7.0)	free chlorine (pH = 7.0)
amino acids
1	glycine	<0.1	<0.1	slow45	<0.1	1.5 × 1053
2	proline	<0.1	<0.1	slow45	<0.1	3.5 × 1033
3	glutamic acid	<0.1	<0.1	slow45	<0.1
4	aspartic acid	<0.1	<0.1	slow45	<0.1
5	tyrosine	0.130	<0.1	slow45	<0.1	4.4 × 10174
6	tryptophan	0.225	<0.1	slow45	<0.1	1.1 × 10474
7	serine	<0.1	<0.1	slow45	<0.1	1.7 × 1053
8	cysteine	>1 × 105	>1 × 105	>1 × 105	>1 × 105	3.0 × 10774
9	methionine	>1 × 105	>1 × 105	>1 × 105	>1 × 105	3.8 × 10774
10	lysine	<0.1	<0.1	slow45	<0.1	5.0 × 10374
11	arginine	<0.1	<0.1	slow45	<0.1	2.6 × 1013
12	histidine	0.294	<0.1	1.862	0.833	1.0 × 10574
ribonucleotides
1	adenosine monophosphate	<0.1	<0.1	slow45	<0.1	6.43
2	guanosine monophosphate	<0.1	<0.1	slow45	<0.1	2.1 × 1043
3	uridine monophosphate	<0.1	<0.1	slow45	<0.1	5.5 × 1033
4	cytidine monophosphate	<0.1	0.254	slow45	<0.1	6.6 × 1013

^aNote: The rate constants without notation for references were acquired in this study.