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Comparison and Cultural Review of Biosphere Modeling Using Foliar Uptake of Technetium-99 in Radishes

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dc.contributor.advisor Higley, Kathryn A.
dc.creator Pierson, Kayla L.
dc.date.accessioned 2011-12-02T01:49:52Z
dc.date.available 2011-12-02T01:49:52Z
dc.date.issued 2011-12-02T01:49:52Z
dc.identifier.uri http://hdl.handle.net/1957/25850
dc.description.abstract Biosphere models predict the transport of radionuclides in the environment with an end goal of assessing the possible risk to humans. Little data exists to support these mathematical biosphere models. The objectives of this work were to verify foliar uptake in biosphere models using experimental data, compare existing biosphere models based on cultural differences, and contributing new values to the literature. Radishes were grown and their leaves were contaminated by a single deposition of technetium-99 to assess the amount of radionuclides transferred to the roots. Liquid scintillation counting was used to determine the radioactivity of the samples at harvest. The radish roots had concentrations between 0 and 500 Bq/g which was on the same order of magnitude as the ANDRA and EPRI model predictions. The Studsvik model prediction was three orders of magnitude higher than the experimental values and was not confirmed. The EPRI, ANDRA, JGC and Studsvik models were compared and contrasted based on location, diet, and construction which led to differences in dose predictions of 0-70 Sv/y. en_US
dc.language.iso en_US en_US
dc.subject radish en_US
dc.subject biosphere modeling en_US
dc.subject radiation en_US
dc.subject Technetium en_US
dc.title Comparison and Cultural Review of Biosphere Modeling Using Foliar Uptake of Technetium-99 in Radishes en_US
dc.type Thesis en_US
dc.degree.name Honors Bachelor of Arts en_US
dc.degree.level Bachelor's en_US
dc.degree.grantor Oregon State University en_US


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