Changes with Time in the Availability of Strontium-90 in Soil


DETAILED knowledge of the behaviour of strontium-90 in soil is of particular importance in assessing the long-term consequences of its deposition on agricultural land. Experiments have been carried out to determine whether strontium-90 becomes progressively fixed and therefore less available to plants. The majority of the more recent evidence suggests that the availability is decreased to only a small extent, if at all, by changes in the physico-chemical state of strontium-90 in the soil1. Deeper penetration through the soil or a more thorough mixing may, however, reduce the quantity of strontium-90 which is absorbed by plants2.

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  1. 1

    Hungate, F. P., Uhler, R. L., and Cline, J. F., Atom. Energy Comm., HW53500 (1958). Morgan, A., J. Nuc. Energy, A, Reactor Sci., 11, 8 (1959).

  2. 2

    Milbourn, G. M., J. Agric. Sci., 55 (1960) (in the press).

  3. 3

    Russell, R. S., Schofield, R. K., and Newbould, P., Proc. Second U.N. Int. Conf. on The Peaceful Uses of Atomic Energy, 27, 146 (1958).

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SQUIRE, H. Changes with Time in the Availability of Strontium-90 in Soil. Nature 188, 518–519 (1960).

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