Central European Journal of Chemistry

, Volume 3, Issue 4, pp 747–755 | Cite as

Investigation of the extraction equilibrium of ion-association complexes of molybdenum (VI) with some polyphenols and thiazolyl blue. extraction-spectrophotometric determination of molybdenum

  • Atanas N. Dimitrov
  • Vania D. Lekova
  • Kiril B. Gavazov
  • Boyan S. Boyanov


The extraction process of ternary ion-association complexes of molybdenum (VI) with some polyphenols (4-nitrocatechol, 2,3-dihydroxy naphthalene) and thiazolyl blue has been investigated by using an extraction-spectrophotometric method. The optimum conditions for their quantitative preparation in aqueous medium and subsequent extraction into an organic solvent have been found. The extraction, distribution and association constants, and the recovery factors have been calculated. The composition of the complexes has been determined. A precise, sensitive and simple extraction-spectrophotometric method for determination of molybdenum in products from ferrous metallurgy has been developed.


Molybdenum Tefrazolium salts Extraction-Spectrophotometry Polyphenols 


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Copyright information

© Central European Science Journals 2005

Authors and Affiliations

  • Atanas N. Dimitrov
    • 1
  • Vania D. Lekova
    • 1
  • Kiril B. Gavazov
    • 1
  • Boyan S. Boyanov
    • 2
  1. 1.Department of General and Inorganic ChemistryPlovdiv UniversityPlovdivBulgaria
  2. 2.Department of Chemical TechnologyPlovdiv UniversityPlovdivBulgaria

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