Sorption-spectrophotometric determination of lanthanum, gadolinium, and ytterbium using chlorophosphonazo III on a PANF-Chel adsorbent

The possibilities of the sorption-spectroscopic determination of the sum of rare-earth elements have been studied on an example of La, Gd, and Yb as representatives of the light, middle, and heavy rare earth elements. The determination is carried out after the sorption from solutions with pH 3 onto...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2011-10, Vol.66 (10), p.937-940
Main Authors: Dedkova, V. P., Shvoeva, O. P., Savvin, S. B.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Gadolinium
Lanthanum
Toy industry
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Summary:The possibilities of the sorption-spectroscopic determination of the sum of rare-earth elements have been studied on an example of La, Gd, and Yb as representatives of the light, middle, and heavy rare earth elements. The determination is carried out after the sorption from solutions with pH 3 onto the surface polyacrylonitrile fiber loaded with a Chel-100 ion exchanger followed by complexation with Chlorophosphonazo III. A dynamic version of the sorption-spectroscopic determination of the sum of La, Gd, and Yb has been developed for the concentration range 5–30 ng/mL with a detection limit of 3 ng/mL. The method was tested in the analysis of model solutions of CaCl 2 , FeCl 3 , and TiCl 4 ; RSD < 20%.
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934811080089