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  • Title: Plutonium contents of broadleaf vegetable crops grown near a nuclear fuel chemical separations facility.
    Author: McLeod KW, Alberts JJ, Adriano DC, Pinder JE.
    Journal: Health Phys; 1984 Feb; 46(2):261-7. PubMed ID: 6693256.
    Abstract:
    Among agricultural crops, broadleaf vegetables are particularly prone to intercept and retain aerially released contaminants. The plutonium concentration of four broadleaf crops (broccoli, cabbage, lettuce and turnip greens) was determined, when grown in close proximity to a nuclear-fuel chemical-separations facility. Concentrations varied among species, apparently influenced by the crop morphology, with Pu concentrations increasing in the sequence: cabbage less than broccoli less than turnip greens less than lettuce. Washing of the crops significantly reduced the Pu concentration of lettuce, but had no effect on Pu concentration of broccoli and cabbage. The vast majority of Pu found in the crops was due to direct deposition of recently released Pu and resuspension of Pu-bearing soil particles, and was not due to root uptake. Resultant doses from consumption are small relative to the annual background dose.
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