Use of Two Sulfonphthalein Dyes for the Sensitive and Selective Extraction-Free Spectrophotometric Assay of Albendazole in Bulk Drug and in Tablets

Table 5

Results of recovery study via standard addition method with tablet.

Method	Tablet studied	ALB in tablet; µg mL^−1	Pure ALB added; µg mL^−1	Total found; µg mL^−1	Pure ALB recovered∗ percent ± SD
A	Alworm 400	6.03	3.0	9.07	101.30±1.52
		6.03	6.0	12.13	101.70±1.61
		6.03	9.0	15.07	100.50±2.11
	ABD 400	5.99	3.0	8.97	99.34±1.89
		5.99	6.0	12.00	100.20±2.34
		5.99	9.0	14.96	99.74±2.30
	Bandy 400	6.02	3.0	9.03	100.40±2.07
		6.02	6.0	11.99	99.50±2.59
		6.02	9.0	15.01	99.96±2.81
B	Alworm 400	8.14	4.0	12.16	100.60±1.31
		8.14	8.0	16.15	100.20±2.56
		8.14	12.0	20.13	99.91±2.48
	ABD 400	8.06	4.0	12.09	100.90±1.49
		8.06	8.0	16.15	101.20±1.56
		8.06	12.0	20.13	100.60±2.48
	Bandy 400	8.05	4.0	12.03	99.45±1.35
		8.05	8.0	16.15	101.30±2.56
		8.05	12.0	20.13	100.70±2.48

∗Mean value of three determinations.