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Ferrimetric determination of molybdenum(V) using rhodamine 6G as fluorescent indicator

  • Seetarama Raju Sagi
  • G. Gopala Rao
Originalabhandlungen

Summary

Molybdenum(V) can be titrated successfully with ferric ammonium sulphate solution in hydrochloric acid medium (2.5 N to 3.0 N) at 98–100° C using Rhodamine 6G as fluorescent indicator. Vanadium(IV) does not interfere in concentrations up to 0.75 mg-equivalents per 30 ml. Uranium (IV) and reduced tungsten are also oxidised and therefore interfere with the determination.

Keywords

Uranium Tungsten Vanadium Molybdenum Rhodamine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Molybdän(V) kann mit gutem Erfolg mit Eisen(III)-ammonium-sulfatlösung in salzsaurem Medium titriert werden, wenn man Rhodamin 6 G als Fluorescenzindicator benutzt und die Titration bei 98–100° C durchführt. Vanadium(IV) stört nicht in Konzentrationen bis zu 0,75 mg-Äq./30 ml. Uran(IV) und reduziertes Wolfram verursachen Störungen, da sie auch oxydiert werden.

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References

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    El-Shamy, H. K., and A. M. El-Aggan: J. Amer. chem. Soc. 75, 1187 (1953).Google Scholar
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    Furman, N. H., and W. M. Murray: J. Amer, chem, Soc. 58, 1689 (1936); cf. Z. analyt. Chem. 111, 419 (1937/38).Google Scholar
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    Rao, G. Gopala, Seetarama Raju Sagi and M. Suryanarayana: Z. analyt. Chem. 169, 248 (1959).Google Scholar
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    Rao, G. Gopala, and M. Suryanarayana: Z. analyt. Chem, 169, 161 (1959).Google Scholar
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    Sagi, Seetarama Raju, and G. Gopala Rao: Talanta (London) 5, 154 (1960); cf. Z. analyt. Chem. 183, 51 (1961).Google Scholar
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    Smith, G. F.: Analyt. Chemistry 23, 925 (1951).Google Scholar

Copyright information

© Springer-Verlag 1962

Authors and Affiliations

  • Seetarama Raju Sagi
    • 1
  • G. Gopala Rao
    • 1
  1. 1.Department of chemistryAndhra UniversityWaltairIndia

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