Summary
Chelex 100, Hyphan cellulose and Amberlite IRC 718 were tested with regard to their chelation efficiency for copper traces. The retention of copper on the three chelating resins was quantitative above pH 3. Complete elution, however, from Chelex 100 and Hyphan was only possible by a mixture of HNO3 and HCl acids. These two chelating resins were compared relevant to their preconcentration efficiency for copper traces from river and lake water samples. When employing the batch equilibration technique, sufficient recoveries were achieved for both of them. The presence of complexing agents as EDTA, NTA, sodium polyphosphate and humic acids affected the preconcentration efficiency of Chelex 100 as well as that of Hyphan. Chelex 100 seemed to be more free from EDTA and NTA interferences than the Hyphan exchanger.
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Voutsa, D., Samara, C., Fytianos, K. et al. Comparative study on the preconcentration of copper traces in non-saline waters with chelating resins. Z. Anal. Chem. 330, 596–599 (1988). https://doi.org/10.1007/BF00473774
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DOI: https://doi.org/10.1007/BF00473774