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Three-column system for preconcentration and speciation determination of trace metals in natural waters

Authors
  • Groschner, Michael
  • Appriou, Pierre
Type
Published Article
Journal
Analytica Chimica Acta
Publisher
Elsevier
Publication Date
Jan 01, 1994
Volume
297
Issue
3
Pages
369–376
Identifiers
DOI: 10.1016/0003-2670(94)00228-2
Source
Elsevier
Keywords
License
Unknown

Abstract

A three-column system consisting of a combination of C 18 reversed phase, Dowex anion-exchange resin and the chelating resin Chelamine is described. This method permits the simultaneous preconcentration and differentiation between neutral hydrophobic organic metal complexes, anionic complexes and the “free ion” concentration of the transition metals in water samples with complex matrices. General operating conditions were established by numerous experiments with model substances. The sample analyses can be made without any previous treatment and hence the pre-established natural equilibria are unadulterated. The method was used in the investigation of several fresh-water and sea-water samples for the determination of Cu 2+, Cd 2+, Pb 2+ and Mn 2+ and showed excellent reproducibility.

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