Research Article

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

Figure 5

Effect of volume of  M bismuth subnitrate on the ion pair formed with (i) 20 μgmL−1 PGZ-HCl and 0.5 mL 0.5 M potassium iodide and (ii) 40 μgmL−1 CRV and 0.7 mL 0.5 M potassium iodide.
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