Summary
A screening test for the investigation of the kinetical behaviour of ion-exchange materials is described. The test enables to decide within a short time which resin may be suitable for a special preconcentration problem. It is based on voltammetric measurements carried out in a single vessel. Using Zn, Cd, Pb and Cu, seventeen ion-exchange materials were checked. Experimental conditions including pH, quantity and particle size of the resins were studied. With regard to water analysis the influence of Na, Ca, Mg, Zn and Fe was investigated. For the determination of the four trace elements in drinking water eight ion exchangers proved to be recommendable at pH 8.
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Dedicated to Prof. Dr. G. Tölg on the occasion of his 60th birthday
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Schulze, G., Elsholz, O. Ion-exchange micro columns for on-line preconcentration of heavy metals I. A rapid voltammetric screening test of ion-exchange kinetics. Z. Anal. Chem. 335, 721–727 (1989). https://doi.org/10.1007/BF01204076
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DOI: https://doi.org/10.1007/BF01204076