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The concentrations of 137Cs were determined by in 11 sediment samples, collected along the Romanian sector of the Danube river and the Black Sea coast during 1994 7-ray spectrometry. The concentrations of 9~ in the same sediment samples were determined by [3-counting of the 90y oxalate, precipitated after strontium separation using a strontium extraction chromatography column. The concentration distributions of 137Cs and 9~ are compared with the 238pu and 239'240pu concentration distributions in the same samples, reported in a previous paper. The accumulation potential of 137Cs, 9~ and plutonium isotopes in the river and sea sediments analysed is discussed.

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