Journal of Solution Chemistry

, Volume 37, Issue 7, pp 933–946 | Cite as

The Interaction of Arsenazo III with Nd(III)—A Chemometric and Metrological Analysis



Interactions of Arsenazo III with Nd(III) in aqueous solutions (pH range 3 to 4) were studied using a spectrophotometric method. Some discrepancies are present in literature concerning the concentrations of the prevailing species and their composition. Threshold bootstrap computer-assisted target factor analysis (TB CAT) was applied to the evaluation of UV-VIS spectra of Arsenazo III in aqueous solutions containing varying amounts of neodymium(III) ions. The thus obtained experimental data are interpreted with consideration of the measurement uncertainties affecting this system. Within the limits of resolution of the experimental method, two complexes NdAazo and Nd(Aazo)2 were indicated in the studied pH range. The values of formation constants for log 10 β 11 fall in the range 4.9 to 6.3 and for log 10 β 12 fall between 10.5 and 12.1.


Chemometrics Metrology in chemistry Complexes Arsenazo III Nd(III) ion 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • M. Kaczmarek
    • 1
  • G. Meinrath
    • 2
    • 3
  • S. Lis
    • 1
  • A. Kufelnicki
    • 4
  1. 1.Faculty of Chemistry, Department of Rare EarthsAdam Mickiewicz University in PoznanPoznanPoland
  2. 2.RER Consultants Schiessstattweg 3aPassauGermany
  3. 3.Department of Inorganic ChemistryTechnische Universität Bergakademie FreibergFreibergGermany
  4. 4.Laboratory of Physical and Biocoordination ChemistryMedical University of LodzLodzPoland

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