Spectrophotometric Determination of Thioridazine Hydrochloride in Tablets and Biological Fluids by Ion-Pair and Oxidation Reactions

Table 2

Evaluation of intraday and interday accuracy and precision of the proposed methods.

Method	THZ taken μg/mL	Intraday			Interday
		THZ found^a, μg/mL	RE^b, %	RSD, %	THZ found, μg/mL	RE, %	RSD, %
BCG	8	7.999	−0.002	1.653	7.999	−0.002	2.025
	16	15.999	−0.004	0.796	15.999	−0.004	1.259
	24	23.999	−0.002	0.421	23.999	−0.002	1.165
BCP	8	7.9996	−0.004	0.853	7.9996	−0.002	2.174
	16	15.999	−0.006	1.312	15.999	−0.006	1.774
	24	23.999	−0.002	0.728	23.999	−0.002	1.927
KMnO4 + IC	0.8	0.801	0.026	1.236	0.799	−4 × 10^−3	0.929
	1.6	1.599	−4 × 10^−3	1.052	1.599	−2 × 10^−3	0.974
	2.4	2.399	−2 × 10^−3	0.717	2.399	−2 × 10^−3	0.424
KMnO4 + MO	0.4	0.399	−4 × 10^−3	1.648	3.999	−4 × 10^−3	1.355
	0.8	0.799	−2 × 10^−3	1.807	0.799	−2 × 10^−3	1.889
	1.6	1.599	−2 × 10^−3	1.660	1.599	−4 × 10^−3	0.803

^aMean value of five determinations.
^bRE: relative error.