Biogeochemical Enrichment of Fission Products

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PROSPECTING for radioactive minerals has gone on for some years in southern Sweden, and areas of higher radioactivity have been subjected to a closer examination. During the course of this survey, samples of different plants were also analyzed with the view of discovering whether biogeochemical prospecting methods could be used or not. It was found that the ash of most plant samples possessed a considerably higher radioactivity than the soils upon which they were growing. This observation led to a closer examination of the distribution of plant radioactivity within some districts in southern Sweden. The districts were chosen to cover not only different rock and soil types but also different topographic sites. The plants collected included the following species: Picea abies, Pinus silvatica Juniperus communis, Fagus silvatica, Quercus robur, Calluna vulgaris, Vaccinium myrtillus, V. vitis-idæa, Polytrichum, and Athyrium.

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    Löw, K., and Edvarson, K., Nature, 183, 1104 (1959).

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LJUNGGREN, P. Biogeochemical Enrichment of Fission Products. Nature 184, 912 (1959) doi:10.1038/184912a0

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