Kinetic spectrophotometric determination of amodiaquine and chloroquine |
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Authors: | Ashraf A. Mohamed |
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Affiliation: | (1) Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, 11566, Egypt;(2) Present address: Department of Chemistry, Faculty of Science, King Faisal University, P.O. Box 400, Al-Hufuf, Al-Hassa, 31982, Saudi Arabia |
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Abstract: | Abstract Two simple, sensitive, and selective spectrophotometric methods were developed for determining amodiaquine (AQ) and chloroquine (CQ) based on their oxidation with potassium iodate and potassium bromate, respectively. The initial rates of oxidation of AQ and CQ were monitored at 342 and 343 nm, the wavelengths of maximum absorptions of the two drugs. The various experimental parameters affecting oxidation reactions were thoroughly studied and optimized. Beer’s law was obeyed for 0.2–4.0 and 0.5–5.0 μg cm−3, with correlation coefficients of 0.9999 and 0.9998 (n = 6) and a detection limit (based on the 3S b -criterion) of 0.04 and 0.06 μg cm−3 for AQ and CQ. The proposed methods were conveniently applied to determining AQ and CQ in pure and dosage forms. |
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