For citation:
Makushova G. N., Voronschikova E. E. Complexation of Rare-Earth Elements with O-Phthalic Acid in Aqueous Solutions. Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2008, vol. 8, iss. 1, pp. 16-19.
This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
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Russian
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Article
UDC:
546.65+546.470
Complexation of Rare-Earth Elements with O-Phthalic Acid in Aqueous Solutions
Autors:
Makushova Galina Nikolaevna, Saratov State University
Voronschikova E. E., Moscow State Open University. Department of Subsoil Protection and Rational Nature Management
Abstract:
Complexation of the rare-earth elements (REE) La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb with o-phthalic acid was studied potentiometrically at 298 K and an ionic strength of 0.2 (KCl). Complex species MHA²⁻ and MA⁺, M being REE and A – C₆H₄O₄²⁻, were detected. The pH range and stability constants of the complexes were established.
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Reference:
- Чазов Е.И., Лакин К.М. Антикоагулянты и фибринолитические средства. М.: Медицина, 1977. 312 с.
- Chaberek S., Martell A.E. Stability of Metal chelates chmindiacetic and chmindipropionic acids // J. Amer. Chem. Soc. 1952. Vol.74, №20. P.5052-5056.
Received:
20.09.2007
Accepted:
15.12.2007
Published:
30.03.2008
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