Abstract
A potted soil experiment was performed to test the effect of the addition of different types of zeolites on the 137Cs or 85Sr uptake by spinach grown on a sandy podzol soil. In all cases, a significant reduction of the 137Cs or 85Sr soil-to-plant transfer was observed. The observed effects were compared with predictions based on a quantitative evaluation of the different factors that govern the solid/liquid partitioning of radiocaesium and radiostrontium both in the soil and in the zeolites. Predictions agree rather well with experimental observations, but analysis of the soil solution indicates that the net effect cannot solely be attributed to the decrease of 137Cs or 85Sr solution concentrations upon zeolite addition.
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