Application of Cerium (IV) as an Oxidimetric Agent for the Determination of Ethionamide in Pharmaceutical Formulations

Figure 1

Absorption spectra of the reaction product in the presence of (a) 0.0; (b) 2.0; (c) 3.0; (d) 4.0; and (e) 5.0 μg/mL ETM; the amount of other reactants remained constant.