Determination of lanthanum(III) and europium(III) – lactate interaction constants by capillary electrophoresis for environmental applications

• Autorzy: Bortolus S. , Varenne A. , Draye M. , Gareil P. , Czerwiński K. , Cote G.
• Języki publikacji: EN

Abstrakty

EN

In the present work, we investigated the ability of electrophoresis to determine the stability constant of the complex formed between lactate ions (a simple model of natural organic matter), and lanthanum (III) and europium (III), two model metal cations of actinides. The effect of lactate on lanthanide’s effective mobility is studied, and conditional metal ion-ligand interaction constants are determined on the basis of the variation in the effective mobilities (log βn = 2.23 for lanthanum (III) and 2.39 for europium (III), at 25°C and I=0.015 M). The originality of this contribution lies in the fact that we have chosen to detect the metal ion instead of the ligand by an indirect UV-visible detection and using a chromophoric compound (creatinine).

Słowa kluczowe

EN

lanthanides(III); lactate; separation; interaction constants; capillary electrophoresis

• Wydawca: Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
• Czasopismo: Ars Separatoria Acta
• Rocznik: 2003
• Tom: No. 2
• Strony: 29--35
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Bortolus S.

• Laboratoire d’électrochimie et de chimie analytique (UMR 7575), Ecole Nationale, Supérieure de Chimie de Paris, 11 rue P. et M. Curie, 75231 Paris Cédex 05, France

autor

Varenne A.

• Laboratoire d’électrochimie et de chimie analytique (UMR 7575), Ecole Nationale, Supérieure de Chimie de Paris, 11 rue P. et M. Curie, 75231 Paris Cédex 05, France

autor

Draye M.

• Laboratoire d’électrochimie et de chimie analytique (UMR 7575), Ecole Nationale, Supérieure de Chimie de Paris, 11 rue P. et M. Curie, 75231 Paris Cédex 05, France

autor

Gareil P.

• Laboratoire d’électrochimie et de chimie analytique (UMR 7575), Ecole Nationale, Supérieure de Chimie de Paris, 11 rue P. et M. Curie, 75231 Paris Cédex 05, France

autor

Czerwiński K.

• Nuclear Engineering Department, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 01139, USA

autor

Cote G.

• Laboratoire d’électrochimie et de chimie analytique (UMR 7575), Ecole Nationale, Supérieure de Chimie de Paris, 11 rue P. et M. Curie, 75231 Paris Cédex 05, France

Bibliografia

• [1] J. Cezikova, J. Kozler, L. Madronova, J. Novak, P. Janos, React. Funct. Polym., 2001, 47, 111-118.
• [2] V. Moulin, C. Moulin, Appl. Geochem., 1995, 10, 573-580.
• [3] L.G. Sillèn, A.E Martell, Stability Constants of Metal-Ion Complexes, Supplement no. 25, The Chemical Society, London 1971, p. 285-286.
• [4] L.G. Sillèn, A.E Martell, Stability Constants of Metal-Ion Complexes, no.17, The Chemical Society, London 1964, p. 390-391.
• [5] S. Motellier, Y. Charles, Anal. Chim. Acta, 1998, 375, 243-254.
• [6] K.A. Connors, Binding Constants-The Measurements of Molecular Complex Stability, John Wiley and Sons, New York 1987, p. 21-101.
• [7] K. L. Rundlett, D. W. Armstrong, Electrophoresis, 1997, 18, 2194-2202.
• [8] K. L. Rundlett, D. W. Armstrong, J. Chromatogr. A, 1996, 721, 173-186.