Authors:
K. Lieser Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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R. Hill Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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U. Mühlenweg Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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R. Singh Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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Tu Shu-De Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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Th. Steinkoff Technische Hochschule Darmstadt Fachbereich Anorganische Chemie und Kernchemie D-6100 Darmstadt (FRG)

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Abstract  

The influence of the following parameters is discussed: oxidation state (Eh), hydrolysis (pH), solubility, complex formation, colloid formation, sorption and filtration effects. The oxidation states of the actinides in neutral aqueous media are plotted as a function of the redox potential. Hydrolysis, stability of 11 carbonato complexes, of humic acid complexes and solubilities of the hydroxides in the various oxidation states are considered. Mobility is investigated as a function of pH by paper chromatography. Partition of the actinides in groundwaters on the molecular fraction, the fine particle (colloid) fraction and the coarse particle fraction is determined as a function of pH by filtration and ultrafiltration. Sorption ratios are measured as function of pH, salt concentration and of EDTA concentration. When the groundwaters are passed through the sediments, mainly the coarse particle fractions are retained by size filtration. The pronounced influence of the redox potential on sorption is demonstrated for Np.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)