Research Article

Manipulating Ratio Spectra for the Spectrophotometric Analysis of Diclofenac Sodium and Pantoprazole Sodium in Laboratory Mixtures and Tablet Formulation

Figure 5

First derivative of ratio spectra of (a) 2.0–24.0 μg/mL diclofenac and (b) 2.0–20.0 μg/mL pantoprazole obtained using 4.0 μg/mL pantoprazole and diclofenac as a divisor, respectively, and methanol as a solvent.
495739.fig.005a
(a)
495739.fig.005b
(b)