Sustained release formulation of an anti-tuberculosis drug based on para-amino salicylic acid-zinc layered hydroxide nanocomposite

Table 2 Elemental chemical composition of free 4-amino salicylic acid and its nanocomposite

Sample	C^a(%w/w)	N^a(%w/w)	C/N	Zn^b(%w/w)	anion^a(%w/w)	BET surface area m²/g	BJH pore volume cm³/g	BJH Average pore diameter Å
ZnO	-	-	-	(80.30)	-	6.4	0.010	111
4-ASA	58.68	9.75	6.02	-	^-	-	-	-
4-ASAN	10.54	1.54	6.84	52.7	16.86	80.5	0.260	96

Value in the parentheses is a theoretical value, ^{an estimated} from CHNS analysis, ^bestimated from ICP analysis.

ISSN: 2661-801X