Simple Atomic Absorption Spectroscopic and Spectrophotometric Methods for Determination of Pioglitazone Hydrochloride and Carvedilol in Pharmaceutical Dosage Forms

Figure 10

Absorption spectra of (a) the reaction of 3 μgmL⁻¹ PGZ-HCl with 1 mL fast green FCF (0.01%, w/v), (b) 1 mL fast green FCF (0.01%, w/v) against methylene chloride, and (c) 3 μgmL⁻¹ PGZ-HCl against methylene chloride.