, Volume 298, Issue 1, pp 635-638
Date: 02 Feb 2013

Should we measure plutonium concentrations in marine sediments near Fukushima?

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Abstract

Pu contamination originating from Fukushima accident has not been detected in marine sediment samples collected outside a 30 km circle around the plant. It is shown, by means of numerical modelling, that if any impact from the accident has occurred, this would remain in a very close area to Fukushima because of the low Pu mobility in the marine environment. Since the situation inside the 30 km zone remains unknown, further studies on the determination of Pu isotopes in sediments within this area are required.