Incorporation of Tritium in Grain Plants

Abstract
In event of a release of tritiated water, the population might be exposed to radioactive water, air and/or food. Maize and barley plants were grown from seed for 30 days in an enclousre in which the soil water and atmospheric vapor contained equilibrium concentrations of tritiated water. At the end of the experiment the plant water of the maize and the barley contained 95 and 84%, respectively, of the environmental concentration of 3H. The 3H:H ratio in plant dry matter was 60% for maize and 45% for barley of the environmental 3H:H ratio. The results show a significant isotope effect which reduce the 3H content of food grown in a continuously contaminated environment.

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