Abstract

INVESTIGATIONS of the diets of the Finnish Lapps1,2 have revealed that fish is the second important source of radiocaesium for several Lapp groups. Unexpectedly, high radiocaesium values, especially in pike, were obtained in the first analyses of Lapland fish2. Therefore it seems important to carry out substantial research on the hydrospheric chains of fall-out nuclides both in Lapland and other parts of Finland, In the following the results of our fish analyses up to the present time are briefly reported. These include analyses of caesium-137 and potassium in 23 samples of fish from the Finnish Lapland and a number of samples from 2 lakes in southern Finland.

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