Abstract
Spectrophotometric study about ion-pair association complex of Mn(VII) as MnO4- by using (4-hydroxyphenylazo)-4-Benzennaphthol HPABN as organic reagent shows wave length for maximum absorbance was ?max= 292nm, so the study about determination the optimum condition of extraction shows the extraction method need presence 0.2 M HCl and 100 µg of Mn (VII) as MnO4-, so 0.5 mL of TritonX-100, and necessary heating the solution at 80oC for 20min with existence 0.1 M of NaCl as electrolyte, so that stoichiometry exhibits the most feasible extracted structure of ion-pair complex with 1:1 (organic reagent: MnO4-). The research involved many other studies such as interferences, surfactant kinds organic reagents kind so that spectrophotometric determination of Mn (VII).
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