Utility of Activated Glassy Carbon and Pencil Graphite Electrodes for Voltammetric Determination of Nalbuphine Hydrochloride in Pharmaceutical and Biological Fluids

Table 3

Statistical parameters of pharmaceutical dosage form assay of the investigated drug by the proposed SWV method at PGE and GCE and reported method.

Electrode	Drug	[NP⋅HCl] taken	Proposed method	Official method	-test	-test
		µg mL^−1	Mean ± SD ()	Mean ± SD ()
PGE	Nalufin (20 mg mL^−1)	10	100.2 ± 0.80	99.41 ± 2.00	1.45	1.56
		20	99.98 ± 1.11	100.2 ± 1.32	1.70	1.81
		30	100.5 ± 0.65	99.74 ± 1.00	1.85	1.96
GCE	Nalufin (20 mg mL^−1)	20	100.7 ± 1.10	99.41 ± 2.00	2.57	1.25
		40	100.90 ± 0.88	100.2 ± 1.32	2.78	1.45
		60	99.98 ± 0.94	100.74 ± 1.00	2.85	1.23

Tabulated -value at 95% confidence limit = 2.77, , degree of freedom = 4.
Tabulated -value at 95% confidence limit = 6.39, .