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Technetium in the Hydrosphere and in the Geosphere
In the range between pH 3 and pH 9 the sorption ratio Rg of Tc is low under aerobic conditions (about 0.1 to 0.3 ml /g), if presence of H,S is excluded, and it is high under strongly anaerobicExpand
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Chemistry of Radioactive Cesium in the Hydrosphere and in the Geosphere
Cesium is sorbed with relatively high selectivity by clay minerals. Accordingly, in groundwaters Cs is found in high amounts in suspended matter or in colloids, if these consist of or contain clayExpand
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Sorption of Uranyl Ions on Hydrous Silicon Dioxide
Sorption of uranyl ions on Si02 • x H 2 0 (silica gel) is investigated in absence and in presence of carbonate as function of pH. The curves obtained are very similar to those observed for sorptionExpand
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Colloid Formation and Sorption of Radionuclides in Natural Systems
Natural systems comprising sediments and groundwaters of low and of high salinity are investigated with respect to the formation and the influence of coarsely dispersed particles and finely dispersedExpand
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Radionuclides in the Geosphere: Sources, Mobility, Reactions in Natural Waters and Interactions with Solids
The various sources of radioactivity are considered. Natural and anthropogenic radionuclides are selected with regard to their importance in the geosphere and listed according to their chemicalExpand
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Radionuclides from the Chernobyl Accident in the Environment of Chattia, a Region of the FRG
The activity of various radionuclides from the Chernobyl accident in air, water, grass, soil, milk and other samples in Chattia is followed as function of time from the end of aprii to the end ofExpand
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Sorption of Trace Elements or Radionuclides in Natural Systems Containing Groundwater and Sediments
A general formula for the sorption ratio that is observed experimentally in natural systems is presented taking into account three kinds of processes: sorption at the outer surface of the solidExpand
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On the Preparation of 99M o of High Specific Activity by Szilard-Chalmers Reactions
Various inorganic and organic compounds of molybdenum are investigated with respect to preparation of 99 Mo of high specific activity. The compounds are irradiated in pure form and mixed withExpand
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