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

Figure 5

(a) Calibration graph of NP⋅HCl drug by using DPV method at PGE electrode,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹, and  mol L⁻¹. (b) Calibration graph of NP⋅HCl drug by using DPV method at GCE electrode,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹,  mol L⁻¹, and  mol L⁻¹.

(a)

(b)