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Maskierung mit Kaliumjodid bei direkten Titrationen von Kupfer(II) mit Äthylendiamintetraessigsäure

Masking with potassium iodide in direct titrations of copper(II) with ethylenediamine tetraacetic acid

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Zusammenfassung

Die Jodidoxydation durch Cu(II) wird in Anwesenheit von Ammoniak, Natriumtartrat, citrat oder -oxalat infolge Komplexbildung verhindert. Daher kann man z. B. Quecksüber(II) in Anwesenheit der genannten Komplexbildner mit Kaliumjodid maskieren und Kupfer(II) durch direkte Titration mit ÄDTA gegen Murexid, Brenzcatechinviolett, Chromazurol S, PAN oder PAR als Indikator bestimmen.

Summary

The formation of a complex prevents the iodide oxidation by Cu(II) in the presence of ammonia, sodium tartrate, citrate, or oxalate. Hence mercury(II) for instance, can be masked against potassium iodide in the presence of these complex formers, and Cu(II) can be determined by direct titration with EDTA in the presence of murexide, pyrocatechol violet, chromazurol, PAN or PAR as indicator.

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Authors and Affiliations

  1. Institut für Chemie der Universität in Novi Sad, Jugoslawien

    Tibor A. Kiss, Terézia M. Surányi & Ferenc F. Gaál

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  1. Tibor A. Kiss
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  2. Terézia M. Surányi
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  3. Ferenc F. Gaál
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Kiss, T.A., Surányi, T.M. & Gaál, F.F. Maskierung mit Kaliumjodid bei direkten Titrationen von Kupfer(II) mit Äthylendiamintetraessigsäure. Mikrochim Acta 57, 266–268 (1969). https://doi.org/10.1007/BF01224089

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  • DOI: https://doi.org/10.1007/BF01224089

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