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Polarographic substitution reduction of copper(II)-ethyleneglycol-bis-(2-aminoethylether)-N,N,N′,N′-tetraacetate and copper(II)-Ethylenediaminetetraacetate chelates in the presence of alkaline earth metal ions

Polarographische Substitutionsreduktion des Kupfer(II)-Ethylenglykol-bis-(2-amino-ethylether)-N,N,N′,N′-tetraacetat-Chelats und des Kupfer(II)-Ethylendiamintetraacetat-Chelats in Gegenwart von Erdalkalimetallionen

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Zusammenfassung

Wenn der Kupfer(II)-EGTE-Komplex ohne Überschuß des Liganden polarographisch reduziert ist, ergeben Strontium- und Bariumionen eine neue Welle bei positiverem Potential. Die Grenzströme der neuen Wellen sind proportional der Strontium- bzw. Bariumionenkonzentration. Magnesiumionen ergeben nur eine sehr schwach ausgebildete Welle. Die Reduktion des Kupfer(II)-EDTE-Chelats in Gegenwart von Erdalkalimetallionen zeigt ein anderes Verhalten; in diesem Fall ist die Substitutionsreduktionswelle nur wenig von der Hauptwelle getrennt.

Summary

When the copper(II)-EGTA complex is polarographically reduced without an excess of the ligand, strontium and barium ions give a new wave at a more positive potential. The limiting currents of the new waves are proportional to the strontium and barium ion concentrations, respectively. Magnesium ion shows only a very poorly developed wave. The reduction of copper(II)-EDTA chelate in the presence of alkaline earth metal ions is different; in this case the substitution reduction wave is only slightly separated from the main wave.

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References

  1. Rajput, A. R., Ohzeki, K., Kambara, T.: Fresenius Z. Anal. Chem. 288, 41 (1977)

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  2. Rajput, A. R., Sugawara, M., Kambara, T.: Fresenius Z. Anal. Chem. 289, 475 (1978)

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  3. Sillén, L. G., Martell, A. E.: Stability Constants of Metal-Ion Complexes, p. 635 and 697. London: The Chemical Society 1964

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  4. Sugawara, M., Murayama, Y., Kambara, T.: Fresenius Z. Anal. Chem. 293, 104 (1978)

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Hokkaido University, 060, Sapporo, Japan

    M. Hirota, M. Sugawara & T. Kambara

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  1. M. Hirota
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  2. M. Sugawara
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  3. T. Kambara
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Hirota, M., Sugawara, M. & Kambara, T. Polarographic substitution reduction of copper(II)-ethyleneglycol-bis-(2-aminoethylether)-N,N,N′,N′-tetraacetate and copper(II)-Ethylenediaminetetraacetate chelates in the presence of alkaline earth metal ions. Z. Anal. Chem. 296, 386–389 (1979). https://doi.org/10.1007/BF00479980

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  • DOI: https://doi.org/10.1007/BF00479980

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