Letter | Published:

Strontium-90 and Caesium-137 in Precipitation in Finland

Nature volume 212, page 61 (01 October 1966) | Download Citation

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Abstract

PRECIPITATION has been collected monthly at seventeen stations in Finland since 1961. Until the end of 1963 the rain-water samples were collected with stainless steel funnels which drained into ion-exchange columns. The columns were placed in boxes fitted with a thermostat, and in winter the funnels were heated. Comparison of the results obtained from samples collected by ion-exchange and from those collected directly into polythene bottles, however, indicated that the former method of sampling does not work satisfactorily in cold regions. In poorly stabilized conditions, caesium, especially, seemed to run through the resin. For this reason, dry and wet deposits have been collected since 1964 with the funnels draining directly into polythene bottles.

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References

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    , , , and , The Determination of Radioactivity Due to Caesium, Strontium, Barium and Cerium in Waters and Filters, AERE-R 2899 (Harwell, Berkshire, 1959).

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    Rep. U.N. Sci. Comm. Effects of Atomic Radiation. Gen. Assemb. Off. Rec.: Nineteenth Session, supplement No. 14 (A/5814).

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    Fallout Program Quart. Summary Rep., HASL-165 (Health and Safety Laboratory, U.S. Atomic Energy Commission, New York, 1966).

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Affiliations

  1. Institute of Radiation Physics, Helsinki.

    • ANNELI SALO

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DOI

https://doi.org/10.1038/212061a0

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