Published 2006 | Version v1
Journal article Metadata-only

Solubility of UO2HPO4 in seawater

Creators

  • 1. Moskovskij Gosudarstvennyj Univ. im. M.V. Lomonosova, Geologicheskij Fakul'tet, Moscow (Russian Federation)

Description

Solubility of UO2HPO4 in seawater with salinity 35 % is studied experimentally. It is determined that nonlinear increase of U(VI) phosphates solubility takes part when seawater acidity decreases. That is caused by formation of strong hydroxide, carbonate and, probably, phosphate complexes. Dependence of solubility kinetics on seawater pH value is determined. It is proposed that U(VI) could be accumulated by sea phosphorites in the form of surface uranyl phosphate complexes as a result of chemisorption

Abstract (Russian)

Экспериментально изучена растворимость UO2HPO4 в морской воде с соленостью 35 %. Установлено нелинейное увеличение растворимости фосфатов U(VI) при снижении кислотности морской воды. Это обусловлено образованием прочных гидроксильных, карбонатных и, возможно, фосфатных комплексов. Определена зависимость кинетики растворимости от величины pH морской воды. Предполагается, что U(VI) может накапливаться в морских фосфоритах в результате хемосорбции в форме поверхностных уранилфосфатных комплексов

Additional details

Additional titles

Original title (Russian)
Растворимост' UO

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
48
Journal Issue
2
Journal Page Range
p. 150-152
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37094443
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
KINETICS; PH VALUE; SALINITY; SEAWATER; SOLUBILITY; URANYL PHOSPHATES
Descriptors DEC
ACTINIDE COMPOUNDS; HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; URANIUM COMPOUNDS; URANYL COMPOUNDS; WATER

Optional Information

Notes
5 refs., 2 figs., 1 tab.