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Chapter 21

Uptake of Natural Uranium by Native Plants Grown in a High Background Radiation Area

This paper describes radiological data for the transfer of natural uranium, the predominant radioelement in the water of irrigation, into vegetation grown during the season prior to consumption. The results of the study are that the groundwaters of the study area (cultivated area very adjacent to Hail city, north-central Saudi Arabia) contain enhanced levels of natural uranium and negligible levels of radium isotopes, the soil contains enhanced levels of natural uranium and thorium compared to the normal levels in the environment, the distribution of uranium showed significant variations among the different parts and types of the plants and the concentration and transfer factor values of uranium isotopes were the highest in roots and leaves, and were the lowest in the fruit samples. Intermediate values were found for stems and tree-branches.

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27 Jul 2015
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