Kinetic spectrophotometric determination of an important pharmaceutical compound, pregabalin

Journal of Analytical Science and Technology

Table 2 Evaluation of accuracy and precision by the proposed method: determination of PGB in pharmaceutical preparations

Method	Amount taken (μg/ml)	Amount ^a found (μg/ml)	%Recovery	SD	RSD (%)
Reaction rate method	40	39.32	98.3	1.071	2.7
	60	59.08	98.46	1.318	2.2
	80	80.58	100.7	1.714	2.1
	100	96.04	96.04	2.210	2.3
	120	120.64	100.53	0.724	0.6
Fixed time method, time (min)
5	40	39.92	99.8	1.081	2.5
	60	59.83	99.7	1.325	2.2
	80	81.51	101.89	1.756	2.1
	100	97.09	97.09	2.22	2.2
	120	121.89	101.5	0.72	0.5
10	40	40.10	100.25	1.085	2.6
	60	58.28	97.13	0.492	0.8
	80	80.20	100.25	1.750	2.1
	100	99.87	99.87	1.356	1.3
	120	120.6	100.5	0.734	0.6
15	40	40.90	102.25	0.50	1.2
	60	57.72	96.21	1.004	1.7
	80	82.32	102.9	2.129	2.5
	100	101.25	101.25	1.337	1.3
	120	119.70	99.75	0.811	0.6