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

Table 5

Inter- and intradays regression parameters using SWV method for determination of NP⋅HCl drug.

Parameter	PGE			GCE
Concentration µg mL^−1	5.00	7.00	10.00	12.00	17.00	20.00
Intraday	100.5 ± 1.32	100.2 ± 1.11	99.8 ± 1.14	99.0 ± 1.20	99.7 ± 0.86	98.5 ± 1.24
Interday	101.3 ± 0.84	99.7 ± 0.86	98.9 ± 1.28	99.5 ± 1.57	98.3 ± 0.87	99.8 ± 0.30

Each result is the average of three separate measurements.