Table 3.

Recovery of nano-Al₂O₃ by UV spectrophotometry.

Initial Concentration (mg/L)	Additive (mg/L)	Result (mg/L)	Recovery (%)
	5.00	14.90	106.4
9.00	10.00	19.82	104.3
	15.00	25.13	104.7
	10.00	28.44	97.4
19.21	20.00	39.93	101.8
	30.00	50.13	101.9
	20.00	59.90	99.0
40.52	30.00	70.91	100.6
	40.00	81.20	100.8