Origin and transport of U and Ra in riverine,estuarine and marine sediments of the Krka River,Croatia |
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Authors: | Neven Cukrov Marina Mlakar Vlado Cuculić Delko Barišić |
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Institution: | Ru?er Boškovi? Institute, Division for Marine and Environmental Research, Bijeni?ka 54, 10 000 Zagreb, Croatia |
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Abstract: | Spatial distribution of 238U and 226Ra activities in sediment columns along the Krka River and estuary, were studied using gamma spectrometry. Markedly different 238U and 226Ra activities between riverine, estuarine and marine sediments were observed. Distribution of these radionuclides, as well as their anthropogenic and natural origin, was evaluated by activity measurements, taking into account sedimentation rates estimated by 137Cs distribution in sediment columns. |
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Keywords: | 238U 226Ra 137Cs Radionuclide Sediment Mussels Mytilus sp Krka River estuary Gamma spectrometry |
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