Cesium-137 in the Portuguese rivers Douro and Tejo |
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| Institution: | 1. State Key Lab. of Earth Surface Processes and Resource Ecology, Beijing Normal Univ., Beijing, China;2. USDA-ARS Grazinglands Research Lab., El Reno, OK, USA;3. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu, China;4. State Key Lab. of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China |
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| Abstract: | Analysis of survey data on the waters of the Douro and Tejo rivers shows that, for the five year period 1976–1980, fallout 137Cs and 90Sr were detectable. In sediments and fish, only 137Cs, of the same fallout origin, was assayed but the results enable estimation of a 137Cs distribution coefficient for sediments of 2 × 103 and a concentration factor for fish of 102. Towards understanding and interpreting these values further, data for the main stable elements have also been analysed. |
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