Determination of manganese in seawater using flow injection analysis with on-line preconcentration and spectrophotometric detection

A highly sensitive method for the rapid determination of dissolved Mn(II) and total dissolvable Mn in seawater has been developed. The method uses on-line concentraion of Mn(II) onto 8-hydroxyquinoline immobilized onto a vinyl polymer gel. The Mn(II) is then eluted from the gel by acid and its concentration determined by spectrophotometric detection of the malachite green formed from the reaction of leucomalachite green and potassium periodate with Mn(II) acting as a catalyst

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