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  • Title: Flow-injection extraction-spectrophotometric determination of imipramine in pharmaceuticals with methyl orange.
    Author: Pérez-Ruiz T, Martinez-Lozano C, Sanz A, Alonso C.
    Journal: Talanta; 1994 Sep; 41(9):1523-7. PubMed ID: 18966098.
    Abstract:
    Imipramine in aqueous solution is extracted into 1,2-dichloroethane as its ion-pair with Methyl Orange in an unsegmented flow system and quantified spectrophotometrically. A linear calibration graph was obtained between 0.79 and 25.3 mug/ml of imipramine. Up to 45 samples/hr can be processed with a RSD of 0.88-1.6%. The method was satisfactorily applied to the determination of imipramine in pharmaceutical preparations.
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