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Determination of Trace Metal Ion Concentrations in Seawater

    1. [1] Duquesne University

      Duquesne University

      City of Pittsburgh, Estados Unidos

    2. [2] University of Salford

      University of Salford

      Reino Unido

  • Localización: Journal of chemical education, ISSN 0021-9584, Vol. 73, Nº 7 (July), 1996, págs. 671-675
  • Idioma: inglés
  • Texto completo no disponible (Saber más ...)
  • Resumen
    • An experimental procedure is described for the pre-concentration of trace metal ions from seawater. The procedure is suitable for senior students in analytical chemistry/instrumental analysis. Hydrated iron (III) oxide is recommended for the coprecipitation of trace transition metal ions from aqueous solution. Chelating ion-exchange with Chelex-100 is similarly recommended. Both techniques have been successfully used here. After leaching the precipitate or desorbing the resin with nitric acid solution, the trace metal ion content of the concentrate is determined using a suitably sensitive analytical technique such as graphite furnace atomic absorption spectrophotometry. The values obtained are used to calculate the concentration of trace metal ions in the seawater.


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