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 2

Analytical parameters of nalbuphine HCl drug at GCE by using DPV and SWV methods.
ParametersDifferential pulse voltammetry (DPV)Square wave voltammetry (SWV)
Peak 1Peak 2
pH777
Concentration range (mol L−1)1.25 × 10−5–1.38 × 10−42.5 × 10−6 –2.75 × 10−51.0 × 10−5–2.75 × 10−5
SD4.26 × 10−91.17 × 10−82.27 × 10−8
RSD %0.55950.56520.6053
Slope of regression line (a)0.00330.03890.0189
Intercept of regression line (b)3.43 × 10−77.49 × 10−74.16 × 10−8
Correlation coefficient ()0.99930.99970.9995
SEE2.43 × 10−93.73 × 10−83.23 × 10−8
LOD (mol L−1)4.26 × 10−69.96 × 10−73.94 × 10−6
LOQ (mol L−1)1.29 ×10−53.02 × 10−61.19 × 10−5