New insights about the rare earth elements (REE) mobility in river waters
نویسندگان
چکیده
منابع مشابه
Rare earth elements (REE) and yttrium in stream waters, stream sediments, and Fe–Mn oxyhydroxides: Fractionation, speciation, and controls over REE + Y patterns in the surface environment
We have collected 500 stream waters and associated bed-load sediments over an 400 km region of Eastern Canada and analyzed these samples for Fe, Mn, and the rare earth elements (REE + Y). In addition to analyzing the stream sediments by total digestion (multi-acid dissolution with metaborate fusion), we also leached the sediments with 0.25 M hydroxylamine hydrochloride (in 0.05 M HCl), to deter...
متن کاملMicrobial mobilization of rare earth elements (REE) from mineral solids—A mini review
In the light of an expected supply shortage of rare earth elements (REE) measures have to be undertaken for an efficient use in all kinds of technical, medical, and agricultural applications as well as—in particular—in REE recycling from post-use goods and waste materials. Biologicallybased methods might offer an alternative and supplement to physico-chemical techniques for REE recovery and rec...
متن کاملRare Earth Elements Profile
Definitions and characteristics The rare earth elements (REE) (sometimes referred to as the rare earth metals) are a group of 17 chemically similar metallic elements, including the 15 lanthanides, scandium and yttrium. The lanthanides are elements spanning atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu) (Table 1). The lanthanides all occur in nature, although promethium, the rarest, only...
متن کاملCarbonate Complexation of Yttrium and the Rare Earth Elements in Natural Waters
Potentiometric measurements of Yttrium and Rare Earth Element (YREE) complexation by carbonate and bicarbonate indicate that the quality of carbonate complexation constants previously obtained via solvent exchange analyses are superior to characterizations obtained using solubility and adsorptive exchange analyses. The results of our analyses at 25°C are combined with the results of previous so...
متن کاملA time series of dissolved rare earth elements in the lower Mississippi River
Dissolved rare earth element (REE) concentrations were determined in a 27-month time series of the lower Mississippi River. Overall our results agree with limited previous investigations; i.e., the river shows enrichment of heavy REEs relative to light REEs and also has a significant Ce anomaly. However, the previous investigations relied on only single samples from the river. Our seasonal inve...
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ژورنال
عنوان ژورنال: Bulletin de la Société Géologique de France
سال: 2002
ISSN: 1777-5817,0037-9409
DOI: 10.2113/173.2.147