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Ionen-chromatographische Analyse anorganischer und organischer Komplexbildner

Ion-chromatographic analysis of inorganic and organic complexing agents

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  • Chromatographische Analyse
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Summary

Inorganic and organic complexing agents like polyphosphates, aminopolycarboxylic acids (NTA, EDTA, DTPA), aminopolyphosphonic acids (NTP, EDTP, DTPP), polyphosphonic and polyphosphinic acids can be separated by means of ion chromatography utilizing a pellicular low capacity anion-exchange resin. Detection is carried out via post-column derivatisation of the column effluent with iron(III) nitrate and UV-detection of the metal complexes at 330 nm. Estimated detection limits for all the compounds investigated are in the lowest ppm-range and can be pushed even lower by use of concentrator columns. The separation and detection system described here, is suitable to separate and determine polyphosphonic and polyphosphinic acids in complex mixtures (reaction control) as well as to investigate the purity of single components (product control). The retention behaviour of a selected group of phosphonic and phosphinic acids has been investigated.

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Authors and Affiliations

  1. Dionex GmbH, Einsteinstrasse 1, D-6108, Weiterstadt, Bundesrepublik Deutschland

    Joachim Weiß

  2. Institut für Anorganische Chemie und Strukturchemie I der Universität Düsseldorf, Universitätsstrasse 1, D-4000, Düsseldorf, Bundesrepublik Deutschland

    Gerhard Hägele

Authors
  1. Joachim Weiß
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  2. Gerhard Hägele
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Weiß, J., Hägele, G. Ionen-chromatographische Analyse anorganischer und organischer Komplexbildner. Z. Anal. Chem. 328, 46–50 (1987). https://doi.org/10.1007/BF00560946

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  • DOI: https://doi.org/10.1007/BF00560946

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