Diffusion measurements as applied in radionuclide migration studies , offer also good possibilities to describe the behaviour of potentially hazardous components in soil, bottom sediments and waste materials, since suitable radiotracers or labelled compounds are available for several substances of environmental concern. At ECN the procedure for the diffusion measurement has been improved with the introduction of an interface marker and the simplification of the method to be able to perform large numbers of measurements on a wide variety of materials under a wide range of experimental conditions using a large number of components. The behaviour of trace constituents in the solid-liquid system can be studied under equilibrium conditions, when the radioactive “spike” is practically weightless, or with a concentration gradient of just one single constituent. In addition, the fractional distribution over liquid and solid can be obtained.
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- Contaminant Diffusion in Sediments, Soil and Waste Materials
H. A. Van Der Sloot
G. J. De Groot
- Springer Netherlands
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