Use of the Charge Transfer Reactions for the Spectrophotometric Determination of Risperidone in Pure and in Dosage Forms

Table 2

Evaluation of accuracy and precision.

Method	RSP taken, μg/mL	Intra-day accuracy and precision			Inter-day accuracy and precision
		RSP found*, μg/mL	% RE	% RSD	RSP found, μg/mL	% RE	% RSD
Method A	5	4.98	0.43	0.41	5.03	−0.49	0.23
	15	14.89	0.74	0.39	15.05	−0.33	0.24
	20	19.93	0.35	0.28	20.14	−0.67	0.39
Method B	5	4.98	0.42	0.79	5.11	−2.28	0.79
	20	19.78	0.94	0.35	20.03	−0.12	0.39
	40	39.89	0.28	0.27	40.12	−0.29	0.53

RE: relative error; RSD: relative standard deviation.
*Mean value of 5 determinations.
At the 95% confidence level for 4 degrees of freedom.