Journal
GEOCHEMICAL JOURNAL
Volume 34, Issue 6, Pages 439-454Publisher
GEOCHEMICAL SOC JAPAN
DOI: 10.2343/geochemj.34.439
Keywords
-
Categories
Ask authors/readers for more resources
The distribution coefficients of rare earth elements (REEs; all lanthanides except Pm, Y and Sc) between Fe oxyhydroxide precipitates and 0.5 M NaCl solutions with NaHCO3 (0.0 similar to 12.0 mM) at 25 degreesC and 1 bar have been determined. This experimental system is a simple model for REE partitioning between deep-sea ferromanganese nodules and seawater. The distribution coefficients; K-d(REE: precipitate/solution), show systematic variations with increasing NaHCO3 concentrations. We have determined REE(III)-carbonate complexation constants from the experimental distribution coefficients as a function of NaHCO3 concentration and pH. The REE(III)-carbonate complexation constants show almost the same series variations as reported values obtained by the solvent-extraction method, although our results by the precipitation method are rather higher by 1.0 similar to1.5 in log unit than the literature data at zero ionic strength.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available