Actinides in the Environment by Arnold M. Friedman (Eds.)

By Arnold M. Friedman (Eds.)

content material: The position of actinide habit in waste administration / John W. Bartlett --
Moisture and solute delivery in porous media / Merlin L. Wheeler --
The migration of plutonium and americium within the lithosphere / S. Fried, A.M. Friedman, J.J. Hines, R.W. Atcher, L.A. Quarterman, and A. Volesky --
organic pathways and chemical habit of plutonium and different actinides within the surroundings / Roger C. Dahlman, Ernest A. Bondietti, and L. Dean Eyman --
program of the field version concept to the geophysical delivery of PuO₂ : geochemistry of Pu(NO₃)₄ / A.T. Jakubick --
Oklo, an scan in long term geologic garage / E.A. Bryant, G.A. Cowan, W.R. Daniels, and W.J. Maeck.

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As can be seen, at the slower velocity the peak i s much sharper. +4 of to in k, Surface Absorption Coefficients: Variation with Concentration Dissolved SaltsT This aspect of the Investigation attempted determine the effect of dissolved s a l t s , which may be present natural ground waters, on the surface absorption c o e f f i c i e n t , defined as: k = (activity/ml solution)/(activity/cm 2 stone) There were three sets of experiments. The f i r s t set consisted of measurements of the surface absorption coefficient of americium and plutonium on basalts and limestones.

An effort was made to avoid the inaccuracies inherent 1n at­ tempting to count alpha particles from concentrated s a l t solutions of Pu. The use of P u was indicated and accordingly aqueous solutions of P u in separate tubes were prepared into which tab­ lets of carefully cleaned, accurately measured Chicago dolomite were immersed. After allowing contact for approximately f i v e days the tablets were removed from the plutonium solution and counted in the gamma ray spectrometer and the amount of P u absorbed de­ termined.

ACS Symposium Series; American Chemical Society: Washington, DC, 1976. FRIED E T AL. Migration S in Lithosphère TABLE II Electromigration of Pu and Am ions. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1976. 16 km/year. Figure 23 i s a plot of the a c t i v i t y distribution of P u migrating from a hypothetical depository. As can be seen in Fig. 24 the bulk of the P u would decay long before i t could migrate 1 km. Thus, in the event of a catastrophic intrusion of Pu into an aquifer (1n one of these media), the bulk of the Pu would not survive the migration to the external environment.

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