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Humic Colloid Generation of Transuranic Elements in Groundwater and Their Migration Behaviour

Published online by Cambridge University Press:  28 February 2011

J.I. Kim ,
G. Buckau  and
W. Zhuang
J.I. Kim
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
G. Buckau
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
W. Zhuang
Affiliation:
Institut für Radiochemie, TU München, 8046 Garching, FRG
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Abstract

The generation of humic colloids of Am(III) has been investigated in Gorleben groundwaters containing different amounts of humic substances. Dissolved organic carbon (DOC) in these groundwaters consists mainly of humic acid and fulvic acid, which is present in a colloidal form through aggregation with trace heavy metal ions of groundwater constituents. Concentrations of these heavy metal ions are proportional to the DOC concentration. The generation of Am(III) pseudocolloids through geochemical interactions with humic colloids in different groundwaters is quantified by ultrafiltration as well as ultracentrifugation by the aid of radiometric concentration measurements. The speciation of dissolved Am(III) species in groundwaters is carried out by laser induced photoacoustic spectroscopy (LPAS).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 84: Symposium L – Scientific Basis for Nuclear Waste Management X , 1986 , 747
Copyright
Copyright © Materials Research Society 1987

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