RARE EARTH AND YTTRIUM PHOSPHATE SOLUBILITIES IN AQUEOUS SOLUTION
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dc.contributor.author | Liu X. | |
dc.contributor.author | Byrne R.H. | |
dc.date.accessioned | 2020-12-16T04:09:09Z | |
dc.date.available | 2020-12-16T04:09:09Z | |
dc.date.issued | 1997 | |
dc.identifier | https://elibrary.ru/item.asp?id=274982 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 1997, , 8, 1625-1633 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/20954 | |
dc.description.abstract | Rare earth and yttrium phosphate solubility products range over more than 1 order of magnitude. Minimum solubilities are observed for light rare earths between Ce and Sm. For the elements Ce, Pr, Nd, and Sm solubility products (log K0sp (M) = log ([M3+i][PO3-4])) at zero ionic strength and 25°C can be approximated as log K0sp(M) = -26.3 +/- 0.2. Rare earth phosphate solubility products for well-aged, coarse precipitates increase substantially between Sm and Lu, with log K0sp(Lu) estimated as -24.7. The solubility product of Y is similar to that of Ho (log K0sp(Y) = -25.0) and is much higher than those of all light rare earths. The solubility product of La is substantially larger than that of Ce (log K0sp(La) - log K0sp(Ce) ~ 0.5). Solubility products are strongly dependent on the conditions of solid phase formation. Fresh precipitates are much more soluble than slowly formed, well-aged, coarse precipitates. The pattern of rare earth and yttrium phosphate solubility products is generally similar to the fractionation patterns which are developed during phosphate coprecipitation. | |
dc.title | RARE EARTH AND YTTRIUM PHOSPHATE SOLUBILITIES IN AQUEOUS SOLUTION | |
dc.type | Статья |
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