Spectrophotometric Studies on the Reaction of Diaveridine with Some Sulfonphthalein Dyes Based on Ion-Pair/Ion-Associate Complexes Formation

Table 5

Determination of diaveridine in pharmaceutical preparation (New-Cox).

Reagent	Taken conc. (µg/mL)	Found conc.^a (µg/mL)	Mean recovery (%)	SD	F^b-test	t^b-test
I	7.80	7.92	101.5	0.024	0.23	3.18
	11.7	11.82	101.3	0.029	0.34	1.57
II	7.80	8.08	103.6	0.026	0.27	3.90
	11.7	11.90	101.8	0.042	0.71	2.19
III	7.80	7.99	102.4	0.039	0.61	2.15
	11.7	11.90	101.8	0.068	1.85	1.71
IV	7.80	7.98	102.3	0.065	1.69	1.58
	11.7	11.86	101.4	0.032	0.41	2.01
V	7.80	7.96	102.1	0.026	0.27	2.22
	11.7	11.85	101.3	0.050	1.01	1.50

^aFound concentration is the average of five values. ^bTheoretical values for t- and F-test at five degrees of freedom and 95% confidence limits are 2.57 and 5.05, respectively.