40 
The resulting mean values of ^Pu^^Pu, 
with a range 0.034-0.065, lead to the 
conclusion that global weapons fallout is still 
expected to be the main source for plutonium 
isotopes in the Baltic Sea. Mean values of the 
ratio 241 Am/ 239 ' 240 Pu were found between 0.12 
(Fucus vesiculosus) and 0.47 (whole-body 
sprat). 
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