International Journal of Electrochemistry

Research Article

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

Table 1

Analytical parameters of nalbuphine HCl drug at PGE by using DPV and SWV methods.
ParametersDifferential pulse voltammetry (DPV)Square wave voltammetry (SWV)
Peak 1Peak 2
pH666
Concentration range (mol L−1)1.6 × 10−5 –1.5 × 10−41.6 × 10−5–1.5 × 10−43.33 × 10−5–1.5 × 10−4
SD2.21 × 10−81.13 × 10−72.56 × 10−8
RSD %0.6780.6551.036
Slope of regression line (a)0.01150.00950.0115
Intercept of regression line (b)4.47 × 10−56.79 × 10−74.47 × 10−7
Correlation coefficient ()0.99950.99950.9993
SEE1.21 × 10−81.03 × 10−81.2 × 10−8
LOD (mol L−1)6.38 × 10−63.91 × 10−51.13 × 10−5
LOQ (mol L−1)1.93 × 10−51.18 × 10−43.43 × 10−5