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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
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| one publication added to basket [221897] |
Determination of cadmium in marine waters: on-line preconcentration and flow-through fluorescence detection
Charles, S.; Yunus, S.; Dubois, F.; Vander Donckt, E. (2001). Determination of cadmium in marine waters: on-line preconcentration and flow-through fluorescence detection. Anal. Chim. Acta 440(1): 37-43. http://dx.doi.org/10.1016/S0003-2670(01)00857-1
In: Analytica Chimica Acta. Elsevier: New York; Amsterdam. ISSN 0003-2670; e-ISSN 1873-4324, meer
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Cadmium; On-line preconcentration; Molecular fluorescence spectroscopy; Seawater; Anthrylazamacrocycle; Fluorogenic reagent |
| Auteurs | | Top |
- Charles, S.
- Yunus, S.
- Dubois, F.
- Vander Donckt, E.
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| Abstract |
This paper reports the development of a new molecular fluorescence spectroscopy method for the determination of cadmium in marine waters. An anthrylhexaazamacrocycle was used as a fluorogenic reagent at pH 13. Ionic extraction chromatography on Dowex resin was necessary to separate cadmium from the matrix and especially from lead, mercury and organic matters present in seawater and interfering with the fluorescence measurements. The coupling of on-line preconcentration by Dowex resin and fluorescence flow-through detection at pH 13 led to a detection limit of 35 pM for a preconcentration time of 5 min (2.1 ml min-1). The accuracy of the method was verified on certified seawater samples SLEW-2 and NASS-5. Water samples collected in the Scheldt estuary near Antwerp (Belgium) during an ebb tide were analysed for dissolved cadmium. |
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