Simple Indirect Spectrophotometric Determination of Amoxicillin in Pharmaceutical Preparations

A simple, rapid and sensitive indirect spectrophotometric method has been described for the determination of Amoxicillin in both pure form and pharmaceutical preparations. The method is based on the reaction of well-known oxidizing agent potassium permanganate with amoxicillin, and then disappearing of violet color of permanganate can be monitored to be proportional to the amount of amoxicilline in the pharmaceutical preparations. The optimum experimental conditions for the reaction have been studied carefully. It was observed that the proposed method has many considerable and reliable figures of merits. Beer's law is obeyed from 0.1-1.6 mg.dL-1.  The detection limit was 0.04mg.dL-1 and the recovery was about 98mg.dL-1. Based on the obtained figures of merits, the proposed method is well-suited for the determination of amoxicillin in different pharmaceutical preparations and routine analysis. Keywords: Determination, Amoxicillin, Spectrophotometry, Potassium Permanganate

Spectrophotometric Determination of Cerium in Some Ore in Kurdistan Region – Iraq

A simple and Sensitive Spectrophotometric method was observed for trace measurement of Cerium (IV) in different serpentinite rocks in two different positions in Kurdistan region of Iraq. The method is depended on absorbance measurement at (490 nm.) for the red complex (Ce - Sulphanilic acid) at pH = 4.75 reproducible results were obtained (Recovery 98 – 103) % for both ores and synthetic Samples of cerium in trace levels. Keywords: red complex, serpentinite rocks, spectrophotometric, ceriu