Published 2006 | Version v1
Journal article Metadata-only

Solubility of mixed-valent hydroxides of U(IV-VI) and Np(IV-V) in solutions of model ground water and in 0.1 mol/l NaClO4

Creators

  • 1. RAN, Inst. Geokhimii i Analiticheskoj Khimii im. V.I. Vernadskogo, Moscow (Russian Federation)
  • 2. Radioactive Waste Management Funding and Research Centre, Tokyo (Japan)
  • 3. IMRAM, Tohoku University, Sendai (Japan)

Description

Kinetics of U(VI) accumulation in U(IV) hydroxide phase and Np(V) in Np(IV) hydroxide phase and solubility of forming mixed-valent hydroxides of U(IV-VI) and Np(IV-V) in solutions of ground water (pH 8.5) and 0.1 mol/l NaClO4 (pH 6.9) are studied. It is determined that structure of mixed-valent U(IV-VI) hydroxide does not effect on it solubility when U(VI) content is less than 16 %. Mixed-valent Np(IV-V) hydroxide, containing from 8 up to 90 % of Np(V), has specific structure which determines it properties

Abstract (Russian)

Изучена кинетика накопления U(IV) в фазе гидроксида U(IV) и Np(V) в фазе гидроксида Np(IV) и растворимость образующихся смешанно-валентных гидроксидов U(IV-VI) и Np(IV-V) в растворах модельной грунтовой воды (pH 8.5) и 0.1 моль/л NaClO4 (pH 6.9). Установлено, что структура смешанно-валентного гидроксида не влияет на его растворимость при условии, что содержание U(VI) не превышает 16 %. Смешанно-валентный гидроксид Np(IV-V), содержащий от 8 до 90 % Np(V), имеет специфическую структуру, которая определяет его свойства

Additional details

Additional titles

Original title (Russian)
Растворимост' смешанно-валентных гидроксидов У(IV-VI) и Нп(IV-В) в растворах модельной грунтовой воды и 0.1 мол'/л NaClO

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
48
Journal Issue
5
Journal Page Range
p. 426-430
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
38038645
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CONCENTRATION RATIO; GROUND WATER; PH VALUE; PLUTONIUM COMPOUNDS; SODIUM PERCHLORATES; SOLUBILITY; URANIUM COMPOUNDS; VALENCE
Descriptors DEC
ACTINIDE COMPOUNDS; ALKALI METAL COMPOUNDS; CHLORINE COMPOUNDS; DIMENSIONLESS NUMBERS; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; OXYGEN COMPOUNDS; PERCHLORATES; SODIUM COMPOUNDS; TRANSURANIUM COMPOUNDS; WATER

Optional Information

Notes
17 refs., 4 figs., 3 tabs.