New spectrofluorometric application for the determination of ternary mixtures of drugs

El-Yazbi, Fawzy A, Hammud, Hassan H and Assi, Sulaf (2006) New spectrofluorometric application for the determination of ternary mixtures of drugs. Analytica Chimica Acta (1). pp. 39-46. ISSN 1873-4324
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A new spectrofluorometric method was developed for the determination of a ternary mixture of dexamethasone, dexchlorpheniramine maleate, and fluphenazine hydrochloride in dosage forms where the literature did not reveal any method for analysis of this mixture. The method was based on the use of the first and second derivatives of the ratio of the emission spectra with a zero-crossing technique. The ratio spectra were obtained by dividing the emission spectrum of the mixture by that of one of the components. The concentrations of the other components were then determined from their respective calibration graphs treated similarly. The method can resolve the spectral overlapping of the three components and was applied successfully for the determination of these drugs in synthetic mixtures and in commercial dosage forms.

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