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Remarques sur les applications de la colorimétrie de précision au microdosage du fluor dans les composés organiques et au dosage de traces de fluor

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Zusammenfassung

Zwei spektrophotometrische Verfahren zur Fluoridbestimmung wurden verglichen: die Entfärbung des Eisen-Sulfosalicylsäure-Komplexes und die Bildung des Fluor-Alizarin-Komplexon-Cer-Komplexes. Die organische Substanz wird entweder durch Verbrennung im Schöniger-Kolben (Milligramm-Einwaagen) oder nach Wickbold (Spurenbestimmung) mineralisiert. Das Alizarin-Komplexon-Verfahren eignet sich besser für die Bestimmung niedrigster Fluorgehalte sowie für die Fluorbestimmung in Gegenwart von Schwefel oder Phosphor.

Summary

The authors compare briefly spectrophotocolorimetric assay of the F- ion by discoloration of the ferrisulfosalicylate complex and by formation of the fluor-alizarine complexon-cerium complex after combustion in Schöniger flasks (milligram analysis) and combustion in a Wickbold apparatus (trace assay). The alizarine complexon appears to be more suitable for analysing small amounts of substances in fluorine, and for analysing substances which are simultaneously substituted with fluorine and sulphur or fluorine and phosphorus.

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Bibliographie

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Author information

Authors and Affiliations

  1. Service central de microanalyse du Centre National de la Recherche Scientifique, Thiais, France

    E. Debal, G. Madelmont, S. Peynot & O. Poliakoff

Authors
  1. E. Debal
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  2. G. Madelmont
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  3. S. Peynot
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  4. O. Poliakoff
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Additional information

A Monsieur le professeur Hans Lieb, à l'occasion de son quatre vingt dixième anniversaire.

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Debal, E., Madelmont, G., Peynot, S. et al. Remarques sur les applications de la colorimétrie de précision au microdosage du fluor dans les composés organiques et au dosage de traces de fluor. Mikrochim Acta 69, 441–449 (1978). https://doi.org/10.1007/BF01201597

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  • DOI: https://doi.org/10.1007/BF01201597

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