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A new spot test for fluoride

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Summary

Solution of silver ion, which is stable in the presence of appropriate concentrations of ferrous and ferric salts, is reduced by ferrous salts if fluoride is added. This fact has been utilized to develop a spot test for fluoride. 2μg of fluoride ion can be detected. A method for the removal of fluoride from interfering ions is also described.

Zusammenfassung

Silberlösungen, die in bestimmten Konzentrationen von Eisen(II)- und Eisen(III)-salzen beständig sind, werden von Eisen(II)-salzen reduziert, wenn man Fluorid zusetzt. Auf dieser Grundlage wurde eine Tüpfelreaktion für Fluorid ausgearbeitet. 2 μg F− können damit nachgewiesen werden. Eine Methode zur Abtrennung von Fluorid von störenden Ionen wurde ebenfalls angegeben.

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References

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Authors and Affiliations

  1. Instituto de Química, Universidade Estadual de Campinas Caixa, Postal 1170, 13.100, Campinas

    Oswaldo E. S. Godinho & Graciliano de Oliveira Neto

  2. Instituto de Química Universidade de São Paulo, Brasil

    Oswaldo E. S. Godinho & Graciliano de Oliveira Neto

Authors
  1. Oswaldo E. S. Godinho
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  2. Graciliano de Oliveira Neto
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Godinho, O.E.S., de Oliveira Neto, G. A new spot test for fluoride. Mikrochim Acta 62, 119–122 (1974). https://doi.org/10.1007/BF01271425

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  • DOI: https://doi.org/10.1007/BF01271425

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