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  • Title: Cathodic adsorptive stripping voltammetric determination of muscle relaxant: gallamine triethiodide (flaxedil).
    Author: Ali AM, Ghandour MA, Abd-El-Fattah MM.
    Journal: J Pharm Biomed Anal; 2001 Apr; 25(1):31-7. PubMed ID: 11274856.
    Abstract:
    A sensitive and simple voltammetric method of analysis is developed for the determination of trace amounts of gallamine triethiode in phosphate media. This method is based on controlled adsorptive preconcentration of the relaxant onto a Hanging Mercury Drop Electrode (HMDE) whereby mercurous iodide salt(s) are formed. The technique used is Cathodic Linear Sweep Stripping Voltammetry (CLSSV). The adsorptive response was evaluated with respect to preconcentration time and potential. As little as 3 x 10(-9) mol dm(-3) i.e. 2.7 ppb flaxedil (proconcentration time 300 seconds) can be determined successfully. The application of this method was tested in the determination of flaxedil in pharmaceutical preparation (ampoules).
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