Phase behavior of Eu(III) in fulvic acid-Fe(III)-H20 system at pH 1-9
Abstract
The method was developed allowing quantitative extraction of fulvic acids from soil samples in the form close to native. Formation of gel-like and soluble forms of iron(III) fulvates in the systems containing equivalent amounts of iron(III) and fulvic acid was studied within pH range 1-9. The molecular structure of fulvates and the mechanism of transformation of gel to soluble forms was analyzed by IR spectroscopy. Distribution of microamounts of europium between gel-like iron fulvates and their solutions was studied. The correlation between phase distribution of europium and solubilization of iron(III) fulvates was analyzed.
- Publication:
-
Czechoslovak Journal of Physics Supplement
- Pub Date:
- January 1999
- DOI:
- 10.1007/s10582-999-0021-8
- Bibcode:
- 1999CzJPS..49..151L