DISTRIBUTION COEFFICIENT OF STRONTIUM ON VARIETY OF MINERALS AND ROCKS

Sorption of strontium on a number of minerals and rocks has been studied by varying aqueous concentrations of strontium. Distribution coefficients (Kd) of strontium determined by a batch method remained constant at a low concentration level and decreased with increasing concentration at a high concentration level. Values of Kd, tτat trace concentrations were considerably different depending on types of geological samples. A linear relationship was observed between the values of Kd, tτand the cation exchange capacity (CEC) for cesium as: log Kd, tτ=log CEC+constant. The values of Kd, tτof strontium changed almost linearly to those of cesium for individual samples suggesting a similarity in physicochemical interactions between geological samples and these ions. © 1990 Taylor & Francis Group, LLC.