Spectrofluorimetric Determination of Diiodohydroxyquinoline in Presence of Metronidazole in Pharmaceutical Formulation and Spiked Human Plasma

Accurate and sensitive spectrofluorimetric method was developed for determination of diiodohydroxyquinoline in presence of metronidazole. In this method the native fluorescence of diiodohydroxyquinoline in water solvent at λ =495 nm when excitation was at 250 nm is used for its determination. Linear correlation was obtained in theconcentration range of 400 to 900 ng mL-1. The proposed method was successfully applied for determination ofdiiodohydroxyquinoline in bulk powder with mean accuracy of 100.21±1.13 or in spiked human plasma with mean accuracy of 100.53±1.42 without interference of metronidazole.