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  • Title: Voltammetric behavior and assay of the antibiotic drug cefazolin sodium in bulk form and pharmaceutical formulation at a mercury electrode.
    Author: El-Desoky HS, Ghoneim EM, Ghoneim MM.
    Journal: J Pharm Biomed Anal; 2005 Oct 04; 39(5):1051-6. PubMed ID: 16005594.
    Abstract:
    The electrochemical behavior of the antibiotic drug cefazolin sodium (CFZ) in Britton-Robinson buffers (pH 2-11) at the mercury electrode was studied by means of dc-polarography, cyclic voltammetry, controlled-potential coulometry and square-wave adsorptive stripping voltammetry techniques. A validated square-wave adsorptive cathodic stripping voltammetric procedure was described for the trace determination of cefazolin in bulk form up to limits of detection and quantitation of 2.6 x 10(-10)M and 8.6 x 10(-10)M, respectively. The method was successfully applied for determination of cefazolin in pharmaceutical preparation without the necessity for samples pretreatment or any time-consuming extraction or evaporation steps prior to the analysis.
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