Validated Method for the Determination of Piroxicam by Capillary Zone Electrophoresis and Its Application to Tablets

Table 4

Application and comparison of the methods.

	CE ()			UV spectrophotometry ()
Added PIR (g/mL)	0.26	2.58	25.8	0.36	0.72	1.08	1.44
Recovery%	101.78	102.62	102.72	101.74	99.88	100.43	101.10
SD	1.185	0.847	0.395	1.78	1.57	0.94	1.11
RSD%	1.165	0.826	0.385	1.75	1.57	0.94	1.10
CI*	±1.99	±1.43	±0.66	±1.69	±1.49	±0.89	±1.06
	1.60
	1.73
	2.77
	5.05

CE is capillary electrophoresis, UV is ultraviolet, PIR is piroxicam, SD is standard deviation, RSD is relative standard deviation, CI is confidence interval, * is probability level of 95%, is Student’s -test, and is -test for (CE) and for (UV) experiments.