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Batch and flow injection spectrophotometric methods for determination of Ceftazidime in pharmaceutical formulations




1-Naphthol , 2-Naphthol Spectrophotometric, Azo – aye , Batch , Ceftazidime , Diazotization, Flow injection


It is generally accepted that there are two spectrophotometric techniques for quantifying ceftazidime (CFT) in bulk medications and pharmaceutical formulations.  The methods  are described as simple, sensitive, selective, accurate and efficient techniques. The first method used an alkaline medium to convert ceftazidime to its diazonium salt, which is then combined with the 1-Naphthol (1-NPT) and 2-Naphthol (2-NPT) reagents. The azo dye that was produced brown  and red in color with absorption intensities of ƛmax 585 and 545nm respectively. Beer's law was followed in terms of concentration ranging from  (3-40) µg .ml-1 For (CFT-1-NPT) and (CFT-2-NPT), the detection limits were 1.0096 and 0.8017 µ, respectively, and the molar absorptivity was 0.7926×104 and 0.5466×104 The Flow Injection Analysis (FIA) method is used to estimate ceftazidime and in the second procedure record measurements using the UV-Visible approach. The Flow injection allows for exact drug estimation under ideal experimental conditions. The concentrations were in the range of (3-50) µg .ml-1 For (CFT-1-NPT) and (CFT-2-NPT), the detection limits were 0.8102, 1. 2809µ, and the molar absorptivity was 0.9565×104 ,0.7106×104, respectively. The proposed two methods for determination Ceftazidime in Pharmaceutical formulation were successfully applied, as these methods were characterized by simplicity, speed, accuracy, and low cost.


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