2007
DOI: 10.1016/j.chemgeo.2006.10.004
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On the formation and structure of rare-earth element complexes in aqueous solutions under hydrothermal conditions with new data on gadolinium aqua and chloro complexes

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Cited by 75 publications
(30 citation statements)
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“…Using X-ray absorption fine structure spectroscopy (XAFS), they determined that all five water molecules were directly coordinated to the Yb metal center. Mayanovic et al reported similar studies for trivalent Gd [23] and Nd [24] and found additional coordinated water molecules at high pressures and temperatures for the dichloride species: GdCl 2 ? Á(H 2 O) 6 and NdCl 2 ?…”
Section: Introductionmentioning
confidence: 59%
“…Using X-ray absorption fine structure spectroscopy (XAFS), they determined that all five water molecules were directly coordinated to the Yb metal center. Mayanovic et al reported similar studies for trivalent Gd [23] and Nd [24] and found additional coordinated water molecules at high pressures and temperatures for the dichloride species: GdCl 2 ? Á(H 2 O) 6 and NdCl 2 ?…”
Section: Introductionmentioning
confidence: 59%
“…Since 1998, a number of studies have investigated the behavior of simple hydrated REE ions (Mayanovic et al, 2002a(Mayanovic et al, , 2002b(Mayanovic et al, , 2007(Mayanovic et al, , 2009a(Mayanovic et al, , 2009bRagnarsdottir et al, 1998). These studies, however, have focused on the hydration structure and co-ordination of these ions, and have not attempted to revise the values recommended by Shock (1997) and Shock and Helgeson (1988).…”
Section: Thermodynamic Stability Of Simple Hydrated Ionsmentioning
confidence: 94%
“…As a result, the stability of REE chloride complexes at elevated temperature has been subjected to much greater scrutiny than REE complexes involving other ligands. The hydrothermal speciation of the REE in chloride-bearing solutions has been investigated using a variety of experimental methods, including solubility (Gammons et al, 1996(Gammons et al, , 2002Migdisov et al, 2009), in situ UV-Vis spectroscopy Williams-Jones, 2002, 2006;Stepanchikova and Kolonin, 2005;, and in situ EXAFS studies (Mayanovic et al, 2002a(Mayanovic et al, , 2002b(Mayanovic et al, , 2007(Mayanovic et al, , 2009a(Mayanovic et al, , 2009b. The studies of Gammons et al (2002) and Migdisov et al (2009) involved simultaneous determination of the stability of a large number of REE in chloride-bearing solutions, whereas the other studies were devoted to single elements.…”
Section: Thermodynamic Stability Of Aqueous Ree Chloride Complexesmentioning
confidence: 99%
“…Yttrium is chemically similar to the lanthanides, so it is usually assimilated to lanthanides. REE geochemical behaviors have been well documented in the past decade, because elements in this group provide a series of geochemical indicators that can be used to constrain the processes in which the elements are mobilized during weathering and redistribution between suspended particulate matter (SPM) and dissolved phases in river waters (Goldstein and Jacobsen 1988;Sholkovitz 1992Sholkovitz , 1993Sholkovitz , 1995Johannesson and Zhou 1999;Tricca et al 1999;Takahashi et al 2002;Tang and Johannesson 2003;Mayanovic et al 2007). The behaviors of dissolved REE in river waters are controlled mainly by water/particle interaction and solution chemistry (e.g., organic and inorganic complexation, adsorption, and sediment resuspension, etc.…”
Section: Introductionmentioning
confidence: 99%