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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 anaerobic
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 clay
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 sorption
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 chemical
Chemistry of Radioactive Iodine in the Hydrosphere and in the Geosphere
The chemistry of iodine in the hydrosphere is discussed and the sorption of radioactive iodine on sediments from the layers above the salt dome at Gorleben is investigated at low and high salt
Numerical Equations for the Extraction of TcVII " by Tri-n-butyi-phosphate (TBP)
On the basis of experimental data and of equations derived for the distribution coefficients of T c ^ in absence and in presence of uranyl ions numerical equations are formulated which allow for the
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 of
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 with
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