Utilization of a Green Brominating Agent for the Spectrophotometric Determination of Pipazethate HCl in Pure Form and Pharmaceutical Preparations

Table 3

Evaluation of intraday precision and accuracy of PZT using the proposed methods.

Method	Taken (𝜇g mL^−1)	Recovery^a (%)	Precision, RSD^b (%)	Accuracy, Er^b (%)	Confidence limit^c
	1.0	99.65	0.93	−0.35	0.9965±0.012
A	1.5	100.07	1.14	0.07	1.501±0.021
	2.0	99.80	1.06	−0.20	1.996±0.026
	2.5	99.96	0.76	−0.04	2.499±0.024
	1.0	100.10	1.32	0.10	1.001±0.016
B	2.0	100.02	1.15	0.02	2.0004±0.029
	3.0	99.90	1.19	−0.10	2.997±0.044
	4.0	100.0	1.26	0.00	4.0±0.063
	2.0	99.50	1.39	−0.50	1.99±0.34
C	4.0	100.05	0.91	0.05	4.002±0.045
	6.0	99.60	0.87	−0.40	5.976±0.065
	7.0	99.40	0.77	−0.60	6.958±0.067
	1.0	100.10	0.98	0.10	1.001±0.012
D	2.0	100.03	1.07	0.03	2.0006±0.027
	3.0	99.85	1.12	−0.15	2.9955±0.0.42
	3.5	99.90	1.53	−0.10	3.4965±0.066
	1.0	99.75	0.85	−0.25	0.9975±0.012
E	1.5	99.90	0.94	−0.10	1.4985±0.017
	2.0	100.05	1.05	0.05	2.001±0.026
	3.0	100.15	1.21	0.15	3.0045±0.045

aMean of five determination.
^bRSD%: percentage relative standard deviation; Er: percentage relative error.
^cConfidence limit at 95% confidence level and four degree of freedom (𝑡=2.776).