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Radiocaesium ( 137 Cs) dispersion and Cs + fixation were studied in the sediments collected from the lagoon systems of “Ria de Aveiro”. The Cs + sorption was tested for the fine mica grains and for the <2 μm clay fractions extracted from silty clays. The Cs + exchange is found strongly onto mica-rich fractions than smectite-rich fractions. The distribution coefficient...
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