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Radioisotopes from dry and wet atmospheric deposition (i.e., 7 Be, 210 Pb and 137 Cs) can be used to determine the sources, fluxes and rates of internal processes in sedimentary compartments such as rivers, estuaries and oceans. The activities of 7 Be, excess 210 Pb ( 210 Pbex) and 137 Cs in surface sediments collected in the Changjiang Estuary...
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