Long-lived radionuclides in the seabed of the Baltic Sea

0,84
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44
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5392
ID Helsinki Commission

2007
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1 Introduction .5

2 Sources of long-lived radionuclides in the Baltic Sea sediments .6

3 Previous inventories of long-lived radionuclides in the Baltic Sea sediments . .9

4 Project plan of the Sediment Baseline Study . .11

5 Results and discussion . .12

5.1 Cs-137 .12

5.2 K-40 .16

5.3 Sr-90 . .17

5.4 Tc-99 . .17

5.5 Ra-226 .18

5.6 Th-232 .18

5.7 Np-237 .19

5.8 Pu-238 .19

5.9 Pu-239,240 . 20

5.10 Am-241 . 20

6 Conclusions 22

7 References .24

Appendix 25

An Intercomparison of Radionuclide Analyses in a Baltic Sea Sediment Sample 25